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Vulnerability Details :

CVE-2020-3436

Summary
Assigner-cisco
Assigner Org ID-d1c1063e-7a18-46af-9102-31f8928bc633
Published At-21 Oct, 2020 | 18:36
Updated At-13 Nov, 2024 | 17:48
Rejected At-
Credits

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services File Upload Denial of Service Vulnerability

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arbitrary-sized files to specific folders on an affected device, which could lead to an unexpected device reload. The vulnerability exists because the affected software does not efficiently handle the writing of large files to specific folders on the local file system. An attacker could exploit this vulnerability by uploading files to those specific folders. A successful exploit could allow the attacker to write a file that triggers a watchdog timeout, which would cause the device to unexpectedly reload, causing a denial of service (DoS) condition.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:cisco
Assigner Org ID:d1c1063e-7a18-46af-9102-31f8928bc633
Published At:21 Oct, 2020 | 18:36
Updated At:13 Nov, 2024 | 17:48
Rejected At:
â–¼CVE Numbering Authority (CNA)
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services File Upload Denial of Service Vulnerability

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arbitrary-sized files to specific folders on an affected device, which could lead to an unexpected device reload. The vulnerability exists because the affected software does not efficiently handle the writing of large files to specific folders on the local file system. An attacker could exploit this vulnerability by uploading files to those specific folders. A successful exploit could allow the attacker to write a file that triggers a watchdog timeout, which would cause the device to unexpectedly reload, causing a denial of service (DoS) condition.

Affected Products
Vendor
Cisco Systems, Inc.Cisco
Product
Cisco Adaptive Security Appliance (ASA) Software
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
CWECWE-434CWE-434
Type: CWE
CWE ID: CWE-434
Description: CWE-434
Metrics
VersionBase scoreBase severityVector
3.08.6HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Version: 3.0
Base score: 8.6
Base severity: HIGH
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys
vendor-advisory
x_refsource_CISCO
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys
Resource:
vendor-advisory
x_refsource_CISCO
â–¼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys
vendor-advisory
x_refsource_CISCO
x_transferred
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys
Resource:
vendor-advisory
x_refsource_CISCO
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:ykramarz@cisco.com
Published At:21 Oct, 2020 | 19:15
Updated At:16 Aug, 2023 | 16:17

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arbitrary-sized files to specific folders on an affected device, which could lead to an unexpected device reload. The vulnerability exists because the affected software does not efficiently handle the writing of large files to specific folders on the local file system. An attacker could exploit this vulnerability by uploading files to those specific folders. A successful exploit could allow the attacker to write a file that triggers a watchdog timeout, which would cause the device to unexpectedly reload, causing a denial of service (DoS) condition.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.18.6HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Secondary3.08.6HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Primary2.07.8HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
Type: Primary
Version: 3.1
Base score: 8.6
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Type: Secondary
Version: 3.0
Base score: 8.6
Base severity: HIGH
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Type: Primary
Version: 2.0
Base score: 7.8
Base severity: HIGH
Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C
CPE Matches
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance>>Versions before 9.6.4.45(exclusive)
cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions up to 6.2.2(inclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.3.0(inclusive) to 6.3.0.6(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.4.0(inclusive) to 6.4.0.10(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.5.0(inclusive) to 6.5.0.5(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>6.6.0
cpe:2.3:a:cisco:firepower_threat_defense:6.6.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>Versions from 9.8.0(inclusive) to 9.8.4.25(exclusive)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>Versions from 9.9.0(inclusive) to 9.9.2.80(exclusive)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>Versions from 9.10.0(inclusive) to 9.10.1.44(exclusive)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>Versions from 9.12.0(inclusive) to 9.12.4.2(exclusive)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>Versions from 9.13.0(inclusive) to 9.13.1.12(exclusive)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>Versions from 9.14.0(inclusive) to 9.14.1.15(exclusive)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-434Primarynvd@nist.gov
CWE-434Secondaryykramarz@cisco.com
CWE ID: CWE-434
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-434
Type: Secondary
Source: ykramarz@cisco.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtysykramarz@cisco.com
Vendor Advisory
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys
Source: ykramarz@cisco.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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Matching Score-8
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Matching Score-8
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-1.49% / 71.17%
||
7 Day CHG~0.00%
Published-24 Mar, 2016 | 22:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The Wide Area Application Services (WAAS) Express implementation in Cisco IOS 15.1 through 15.5 allows remote attackers to cause a denial of service (device reload) via a crafted TCP segment, aka Bug ID CSCuq59708.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-iosn/a
CVE-2016-1479
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-3.00% / 85.87%
||
7 Day CHG~0.00%
Published-22 Aug, 2016 | 10:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IP Phone 8800 devices with software 11.0(1) allow remote attackers to cause a denial of service (memory corruption) via a crafted HTTP request, aka Bug ID CSCuz03038.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ip_phone_8800ip_phone_8800_series_firmwaren/a
CWE ID-CWE-20
Improper Input Validation
CVE-2011-3299
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.63% / 73.66%
||
7 Day CHG~0.00%
Published-06 Oct, 2011 | 10:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services module in Cisco Catalyst 6500 series devices, with software 7.0 before 7.0(8.13), 7.1 and 7.2 before 7.2(5.4), 8.0 before 8.0(5.25), 8.1 and 8.2 before 8.2(5.11), 8.3 before 8.3(2.23), 8.4 before 8.4(2.6), and 8.5 before 8.5(1.1) and Cisco Firewall Services Module (aka FWSM) 3.1 before 3.1(21), 3.2 before 3.2(22), 4.0 before 4.0(16), and 4.1 before 4.1(7) allow remote attackers to cause a denial of service (device reload) via crafted SunRPC traffic, aka Bug IDs CSCto92380 and CSCtq09972.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-catalyst_6500asa_5500firewall_services_module_softwarecatalyst_7600adaptive_security_appliance_software5500_series_adaptive_security_appliancen/a
CVE-2016-1481
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-3.02% / 85.98%
||
7 Day CHG~0.00%
Published-28 Oct, 2016 | 10:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Email Security Appliances, both virtual and hardware appliances, if the software is configured to apply a message filter that contains certain rules. More Information: CSCux59873. Known Affected Releases: 8.5.6-106 9.1.0-032 9.7.0-125. Known Fixed Releases: 9.1.1-038 9.7.1-066.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-email_security_applianceCisco AsyncOS through 9.7.0-125
CWE ID-CWE-20
Improper Input Validation
CVE-2020-3422
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-8.6||HIGH
EPSS-1.27% / 66.72%
||
7 Day CHG~0.00%
Published-24 Sep, 2020 | 18:01
Updated-13 Nov, 2024 | 17:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Cisco IOS XE Software IP Service Level Agreements Denial of Service Vulnerability

A vulnerability in the IP Service Level Agreement (SLA) responder feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the IP SLA responder to reuse an existing port, resulting in a denial of service (DoS) condition. The vulnerability exists because the IP SLA responder could consume a port that could be used by another feature. An attacker could exploit this vulnerability by sending specific IP SLA control packets to the IP SLA responder on an affected device. The control packets must include the port number that could be used by another configured feature. A successful exploit could allow the attacker to cause an in-use port to be consumed by the IP SLA responder, impacting the feature that was using the port and resulting in a DoS condition.

Action-Not Available
Vendor-Cisco Systems, Inc.
Product-1111x_integrated_services_routercatalyst_3850catalyst_3650asr_1013catalyst_9200catalyst_98004431_integrated_services_router1160_integrated_services_routercatalyst_9600catalyst_9500asr_1002-hxcsr_1000v1100_integrated_services_routerios_xe4221_integrated_services_router4331_integrated_services_routerasr_10064461_integrated_services_routercatalyst_9300asr_1001-xasr_10041109_integrated_services_router1101_integrated_services_routercatalyst_9400asr_1001-hx111x_integrated_services_routerasr_1002-x1120_integrated_services_routerasr_1009-xasr_1006-xCisco IOS XE Software
CWE ID-CWE-371
Not Available
CVE-2011-1651
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.21% / 65.05%
||
7 Day CHG~0.00%
Published-31 May, 2011 | 20:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XR 3.9.x and 4.0.x before 4.0.3 and 4.1.x before 4.1.1, when an SPA interface processor is installed, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 packet, aka Bug ID CSCto45095.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xrn/a
CVE-2011-0394
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-3.44% / 87.68%
||
7 Day CHG~0.00%
Published-25 Feb, 2011 | 11:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.0 before 7.0(8.11), 7.1 and 7.2 before 7.2(5.1), 8.0 before 8.0(5.19), 8.1 before 8.1(2.47), 8.2 before 8.2(2.19), and 8.3 before 8.3(1.8); Cisco PIX Security Appliances 500 series devices; and Cisco Firewall Services Module (aka FWSM) 3.1 before 3.1(20), 3.2 before 3.2(20), 4.0 before 4.0(15), and 4.1 before 4.1(5) allow remote attackers to cause a denial of service (device reload) via a malformed Skinny Client Control Protocol (SCCP) message, aka Bug IDs CSCtg69457 and CSCtl84952.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-asa_5500firewall_services_module_softwarepix_500firewall_services_moduleadaptive_security_appliance_softwareadaptive_security_appliance5500_series_adaptive_security_appliancen/a
CVE-2003-0567
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.8||HIGH
EPSS-16.58% / 96.66%
||
7 Day CHG~0.00%
Published-25 Jul, 2003 | 04:00
Updated-16 Apr, 2026 | 00:27
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 packets to an interface on the device, causing the input queue on that interface to be marked as full.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-optical_networking_systems_softwareiosons_15454_optical_transport_platformn/a
CWE ID-CWE-20
Improper Input Validation
CVE-2010-1567
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-2.49% / 82.90%
||
7 Day CHG~0.00%
Published-14 May, 2010 | 20:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The SIP implementation on the Cisco PGW 2200 Softswitch with software before 9.8(1)S5 allows remote attackers to cause a denial of service (device crash) via a malformed header, aka Bug ID CSCsz13590.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-pgw_2200_softswitchn/a
CWE ID-CWE-20
Improper Input Validation
CVE-2002-2315
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.8||HIGH
EPSS-9.56% / 94.93%
||
7 Day CHG~0.00%
Published-26 Oct, 2007 | 19:00
Updated-16 Apr, 2026 | 00:27
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS 11.2.x and 12.0.x does not limit the size of its redirect table, which allows remote attackers to cause a denial of service (memory consumption) via spoofed ICMP redirect packets to the router.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-iosn/a
CVE-2010-0149
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-4.08% / 89.60%
||
7 Day CHG~0.00%
Published-19 Feb, 2010 | 17:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Unspecified vulnerability in Cisco ASA 5500 Series Adaptive Security Appliance 7.2 before 7.2(4.46), 8.0 before 8.0(4.38), 8.1 before 8.1(2.29), and 8.2 before 8.2(1.5); and Cisco PIX 500 Series Security Appliance; allows remote attackers to cause a denial of service (prevention of new connections) via crafted TCP segments during termination of the TCP connection that cause the connection to remain in CLOSEWAIT status, aka "TCP Connection Exhaustion Denial of Service Vulnerability."

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-pix_500asa_5500n/a
CVE-2015-6271
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.99% / 78.50%
||
7 Day CHG~0.00%
Published-31 Aug, 2015 | 20:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE 2.1.0 through 2.4.3 and 2.5.0 on ASR 1000 devices, when NAT Application Layer Gateway is used, allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted SIP packet, aka Bug IDs CSCta74749 and CSCta77008.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xeasr_1001-xasr_1002-xasr_1002asr_1001asr_1006asr_1013asr_1004n/a
CVE-2015-6326
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.91% / 77.50%
||
7 Day CHG~0.00%
Published-25 Oct, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco Adaptive Security Appliance (ASA) software 7.2 and 8.2 before 8.2(5.58), 8.3 and 8.4 before 8.4(7.29), 8.5 through 8.7 before 8.7(1.17), 9.0 before 9.0(4.37), 9.1 before 9.1(6.6), 9.2 before 9.2(4), 9.3 before 9.3(3.5), and 9.4 before 9.4(1.5) allows remote attackers to cause a denial of service (device reload) via a crafted DNS response, aka Bug ID CSCuu07799.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-adaptive_security_appliance_softwaren/a
CVE-2015-6279
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-3.22% / 86.83%
||
7 Day CHG~0.00%
Published-28 Sep, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The IPv6 snooping functionality in the first-hop security subsystem in Cisco IOS 12.2, 15.0, 15.1, 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.2SE, 3.3SE, 3.3XO, 3.4SG, 3.5E, and 3.6E before 3.6.3E; 3.7E before 3.7.2E; 3.9S and 3.10S before 3.10.6S; 3.11S before 3.11.4S; 3.12S and 3.13S before 3.13.3S; and 3.14S before 3.14.2S allows remote attackers to cause a denial of service (device reload) via a malformed ND packet with the Cryptographically Generated Address (CGA) option, aka Bug ID CSCuo04400.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-iosios_xen/a
CWE ID-CWE-20
Improper Input Validation
CVE-2015-6393
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-1.91% / 77.57%
||
7 Day CHG~0.00%
Published-06 Oct, 2016 | 10:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 3000, 3500, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via malformed IPv4 DHCP packets to the DHCPv4 relay agent, aka Bug IDs CSCuq39250, CSCus21733, CSCus21739, CSCut76171, and CSCux67182.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-nexus_9396txnexus_5548pnexus_9396pxnexus_7010nexus_7718nexus_5548upnexus_6001nexus_7009nexus_7706nexus_7018nexus_93128nexus_6004nexus_9508nexus_56128pnexus_5672up-16gnexus_5020nexus_5648qnexus_9504nexus_7702nexus_5596upnexus_7710nexus_5672upnexus_9516nexus_5010nexus_7004nx-osnexus_5696qnexus_n9336pqxnexus_5596tnexus_5624qn/a
CVE-2009-4914
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.8||HIGH
EPSS-0.74% / 50.59%
||
7 Day CHG~0.00%
Published-29 Jun, 2010 | 18:00
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Memory leak on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allows remote attackers to cause a denial of service (memory consumption) via Subject Alternative Name fields in an X.509 certificate, aka Bug ID CSCsq17879.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-asa_5580n/a
CVE-2015-6392
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-1.91% / 77.57%
||
7 Day CHG~0.00%
Published-06 Oct, 2016 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via crafted IPv4 DHCP packets to the (1) DHCPv4 relay agent or (2) smart relay agent, aka Bug IDs CSCuq24603, CSCur93159, CSCus21693, and CSCut76171.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-nexus_9372txnexus_7000_18-slotnexus_7000_4-slotnexus_92160yc-xnexus_7000_9-slotnexus_6004nexus_56128pnexus_9236cnexus_5672up-16gnexus_93128txnexus_5020nexus_7700_18-slotnexus_5596upnexus_9372pxnexus_5672upnexus_7000_10-slotnexus_5010nexus_5696qnexus_7700_2-slotnexus_5596tnexus_5624qnexus_9504nexus_9332pqnexus_9396txnexus_5548pnexus_9396pxnexus_9272qnexus_6001nexus_7700_10-slotnexus_9336pq_aci_spinenexus_92304qcnexus_9508nexus_7700_6-slotnexus_5648qnexus_93120txnexus_9516nx-osnexus_93180yc-exnexus_93108tc-exnexus_5548upn/a
CVE-2015-6278
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-3.22% / 86.83%
||
7 Day CHG~0.00%
Published-28 Sep, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The IPv6 snooping functionality in the first-hop security subsystem in Cisco IOS 12.2, 15.0, 15.1, 15.2, 15.3, 15.4, and 15.5 and IOS XE 3.2SE, 3.3SE, 3.3XO, 3.4SG, 3.5E, and 3.6E before 3.6.3E; 3.7E before 3.7.2E; 3.9S and 3.10S before 3.10.6S; 3.11S before 3.11.4S; 3.12S and 3.13S before 3.13.3S; and 3.14S before 3.14.2S does not properly implement the Control Plane Protection (aka CPPr) feature, which allows remote attackers to cause a denial of service (device reload) via a flood of ND packets, aka Bug ID CSCus19794.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-iosios_xen/a
CWE ID-CWE-20
Improper Input Validation
CVE-2015-6273
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.91% / 77.50%
||
7 Day CHG~0.00%
Published-29 Aug, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE before 3.1.2S on ASR 1000 devices mishandles the automatic setup of Virtual Fragment Reassembly (VFR) by certain firewall and NAT components, which allows remote attackers to cause a denial of service (Embedded Services Processor crash) via crafted IP packets, aka Bug IDs CSCtf87624, CSCte93229, CSCtd19103, and CSCti63623.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xeasr_1001-xasr_1002-xasr_1002asr_1001asr_1006asr_1013asr_1004n/a
CVE-2015-6268
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.36% / 68.66%
||
7 Day CHG~0.00%
Published-29 Aug, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE before 2.2.3 on ASR 1000 devices allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted IPv4 UDP packet, aka Bug ID CSCsw95482.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xeasr_1001-xasr_1002-xasr_1002asr_1001asr_1006asr_1013asr_1004n/a
CVE-2015-6272
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.91% / 77.50%
||
7 Day CHG~0.00%
Published-31 Aug, 2015 | 20:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE 2.1.0 through 2.2.3 and 2.3.0 on ASR 1000 devices, when NAT Application Layer Gateway is used, allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted H.323 packet, aka Bug ID CSCsx35393, CSCsx07094, and CSCsw93064.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xeasr_1001-xasr_1002-xasr_1002asr_1001asr_1006asr_1013asr_1004n/a
CVE-2008-0536
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-4.32% / 90.10%
||
7 Day CHG~0.00%
Published-22 May, 2008 | 10:00
Updated-23 Apr, 2026 | 00:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Unspecified vulnerability in the SSH server in (1) Cisco Service Control Engine (SCE) 3.0.x before 3.0.7 and 3.1.x before 3.1.0, and (2) Icon Labs Iconfidant SSH before 2.3.8, allows remote attackers to cause a denial of service (management interface outage) via SSH traffic that occurs during management operations and triggers "illegal I/O operations," aka Bug ID CSCsh49563.

Action-Not Available
Vendor-icon-labsn/aCisco Systems, Inc.
Product-iconfidant_sshservice_control_enginen/a
CWE ID-CWE-287
Improper Authentication
CVE-2015-6284
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-2.35% / 81.84%
||
7 Day CHG~0.00%
Published-20 Sep, 2015 | 14:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Buffer overflow in the Conference Control Protocol API implementation in Cisco TelePresence Server software before 4.1(2.33) on 7010, MSE 8710, Multiparty Media 310 and 320, and Virtual Machine devices allows remote attackers to cause a denial of service (device crash) via a crafted URL, aka Bug ID CSCuu28277.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-telepresence_server_on_multiparty_media_320telepresence_server_on_multiparty_media_310telepresence_server_softwaretelepresence_server_mse_8710telepresence_server_7010telepresence_server_on_virtual_machinen/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-6377
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.87% / 76.99%
||
7 Day CHG~0.00%
Published-24 Nov, 2015 | 02:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco Virtual Topology System (VTS) 2.0(0) and 2.0(1) allows remote attackers to cause a denial of service (CPU and memory consumption, and TCP port outage) via a flood of crafted TCP packets, aka Bug ID CSCux13379.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-virtual_topology_systemn/a
CVE-2015-6312
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-1.93% / 77.79%
||
7 Day CHG~0.00%
Published-06 Apr, 2016 | 23:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco TelePresence Server 3.1 on 7010, Mobility Services Engine (MSE) 8710, Multiparty Media 310 and 320, and Virtual Machine (VM) devices allows remote attackers to cause a denial of service (device reload) via malformed STUN packets, aka Bug ID CSCuv01348.

Action-Not Available
Vendor-zzincn/aDell Inc.NETGEAR, Inc.Cisco Systems, Inc.Zyxel Networks Corporation
Product-telepresence_server_on_multiparty_media_320emc_powerscale_onefstelepresence_server_on_multiparty_media_310gs1900-10hp_firmwaretelepresence_server_mse_8710telepresence_server_7010jr6150_firmwaretelepresence_server_on_virtual_machinekeymouse_firmwaren/a
CWE ID-CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE-2015-6282
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-2.19% / 80.48%
||
7 Day CHG~0.00%
Published-25 Sep, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE 2.x and 3.x before 3.10.6S, 3.11.xS through 3.13.xS before 3.13.3S, and 3.14.xS through 3.15.xS before 3.15.1S allows remote attackers to cause a denial of service (device reload) via IPv4 packets that require NAT and MPLS actions, aka Bug ID CSCut96933.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xen/a
CWE ID-CWE-20
Improper Input Validation
CVE-2015-6260
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.5||HIGH
EPSS-2.35% / 81.79%
||
7 Day CHG~0.00%
Published-03 Mar, 2016 | 22:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco NX-OS 7.1(1)N1(1) on Nexus 5500, 5600, and 6000 devices does not properly validate PDUs in SNMP packets, which allows remote attackers to cause a denial of service (SNMP application restart) via a crafted packet, aka Bug ID CSCut84645.

Action-Not Available
Vendor-n/aCisco Systems, Inc.Zyxel Networks Corporation
Product-nexus_5624qnexus_5648qnexus_5596upnexus_5548pgs1900-10hp_firmwarenexus_5672upnexus_5696qnexus_5596tnexus_56128pnexus_5548upn/a
CWE ID-CWE-20
Improper Input Validation
CVE-2015-6327
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-2.17% / 80.33%
||
7 Day CHG~0.00%
Published-25 Oct, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The IKEv1 implementation in Cisco Adaptive Security Appliance (ASA) software 7.2 and 8.2 before 8.2(5.58), 8.3 and 8.4 before 8.4(7.29), 8.5 through 8.7 before 8.7(1.17), 9.0 before 9.0(4.37), 9.1 before 9.1(6.8), 9.2 before 9.2(4), and 9.3 before 9.3(3) allows remote attackers to cause a denial of service (device reload) via crafted ISAKMP UDP packets, aka Bug ID CSCus94026.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-adaptive_security_appliance_softwaren/a
CVE-2015-6293
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.93% / 77.70%
||
7 Day CHG~0.00%
Published-06 Nov, 2015 | 02:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco AsyncOS 8.x before 8.0.8-113, 8.1.x and 8.5.x before 8.5.3-051, 8.6.x and 8.7.x before 8.7.0-171-LD, and 8.8.x before 8.8.0-085 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via multiple file-range requests, aka Bug ID CSCur39155.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-web_security_appliancen/a
CVE-2015-6292
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.93% / 77.70%
||
7 Day CHG~0.00%
Published-06 Nov, 2015 | 11:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The proxy-cache implementation in Cisco AsyncOS 8.0.x before 8.0.7-151, 8.1.x and 8.5.x before 8.5.2-004, 8.6.x and 8.7.x before 8.7.0-171-LD, and 8.8.x before 8.8.0-085 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via multiple proxy connections, aka Bug ID CSCus10922.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-web_security_appliancen/a
CVE-2015-6270
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.93% / 77.70%
||
7 Day CHG~0.00%
Published-31 Aug, 2015 | 20:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE before 2.2.3 on ASR 1000 devices allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted IPv6 packet, aka Bug ID CSCsv98555.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xeasr_1001-xasr_1002-xasr_1002asr_1001asr_1006asr_1013asr_1004n/a
CVE-2015-6321
Matching Score-8
Assigner-Cisco Systems, Inc.
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Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-2.76% / 84.67%
||
7 Day CHG~0.00%
Published-06 Nov, 2015 | 02:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco AsyncOS before 8.5.7-042, 9.x before 9.1.0-032, 9.1.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-042 on Email Security Appliance (ESA) devices; before 9.1.0-032, 9.1.1 before 9.1.1-005, and 9.5.x before 9.5.0-025 on Content Security Management Appliance (SMA) devices; and before 7.7.0-725 and 8.x before 8.0.8-113 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via a flood of TCP packets, aka Bug IDs CSCus79774, CSCus79777, and CSCzv95795.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-email_security_applianceweb_security_appliancecontent_security_management_appliancen/a
CVE-2015-6267
Matching Score-8
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-8
Assigner-Cisco Systems, Inc.
CVSS Score-7.8||HIGH
EPSS-1.91% / 77.50%
||
7 Day CHG~0.00%
Published-29 Aug, 2015 | 01:00
Updated-06 May, 2026 | 22:30
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Cisco IOS XE before 2.2.3 on ASR 1000 devices allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted L2TP packet, aka Bug IDs CSCsw95722 and CSCsw95496.

Action-Not Available
Vendor-n/aCisco Systems, Inc.
Product-ios_xeasr_1001-xasr_1002-xasr_1002asr_1001asr_1006asr_1013asr_1004n/a
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