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Vulnerability Details :

CVE-2026-42959

Summary
Assigner-NLnet Labs
Assigner Org ID-206fc3a0-e175-490b-9eaa-a5738056c9f6
Published At-20 May, 2026 | 09:20
Updated At-20 May, 2026 | 13:12
Rejected At-
Credits

Crash during DNSSEC validation of malicious content

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets for ADDITIONAL section rrsets. DNAME duplication could increase the ANSWER section count and authority filtering could decrease the AUTHORITY section count and create an uninitialized array slot. Combining these two, the validator later dereferences this uninitialized pointer, causing an immediate process crash. An adversary controlling a DNSSEC-signed domain can trigger this bug with a single query by configuring a DNAME chain with unsigned CNAMEs and a response containing unsigned AUTHORITY records alongside signed ADDITIONAL glue records. Unbound 1.25.1 contains a patch with a fix to use the proper counters to calculate the write offsets.

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:NLnet Labs
Assigner Org ID:206fc3a0-e175-490b-9eaa-a5738056c9f6
Published At:20 May, 2026 | 09:20
Updated At:20 May, 2026 | 13:12
Rejected At:
â–¼CVE Numbering Authority (CNA)
Crash during DNSSEC validation of malicious content

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets for ADDITIONAL section rrsets. DNAME duplication could increase the ANSWER section count and authority filtering could decrease the AUTHORITY section count and create an uninitialized array slot. Combining these two, the validator later dereferences this uninitialized pointer, causing an immediate process crash. An adversary controlling a DNSSEC-signed domain can trigger this bug with a single query by configuring a DNAME chain with unsigned CNAMEs and a response containing unsigned AUTHORITY records alongside signed ADDITIONAL glue records. Unbound 1.25.1 contains a patch with a fix to use the proper counters to calculate the write offsets.

Affected Products
Vendor
NLnet Labs
Product
Unbound
Default Status
unaffected
Versions
Affected
  • From 0 before 1.25.1 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-824CWE-824: Access of Uninitialized Pointer
Type: CWE
CWE ID: CWE-824
Description: CWE-824: Access of Uninitialized Pointer
Metrics
VersionBase scoreBase severityVector
4.08.7HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Red
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Red
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

This issue is fixed starting with version 1.25.1

Configuring 'val-clean-additional: no' (non-default) bypasses the vulnerable code in vulnerable versions

Configurations

Workarounds

Exploits

Credits

finder
Qifan Zhang (Palo Alto Networks)
Timeline
EventDate
Issue reported by Qifan Zhang2026-04-15 00:00:00
NLnet Labs shares patch2026-04-29 00:00:00
Qifan Zhang verifies patch2026-04-29 00:00:00
Fixes released with version 1.25.12026-05-20 00:00:00
Event: Issue reported by Qifan Zhang
Date: 2026-04-15 00:00:00
Event: NLnet Labs shares patch
Date: 2026-04-29 00:00:00
Event: Qifan Zhang verifies patch
Date: 2026-04-29 00:00:00
Event: Fixes released with version 1.25.1
Date: 2026-05-20 00:00:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42959.txt
vendor-advisory
Hyperlink: https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42959.txt
Resource:
vendor-advisory
â–¼Authorized Data Publishers (ADP)
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:sep@nlnetlabs.nl
Published At:20 May, 2026 | 10:16
Updated At:20 May, 2026 | 22:51

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets for ADDITIONAL section rrsets. DNAME duplication could increase the ANSWER section count and authority filtering could decrease the AUTHORITY section count and create an uninitialized array slot. Combining these two, the validator later dereferences this uninitialized pointer, causing an immediate process crash. An adversary controlling a DNSSEC-signed domain can trigger this bug with a single query by configuring a DNAME chain with unsigned CNAMEs and a response containing unsigned AUTHORITY records alongside signed ADDITIONAL glue records. Unbound 1.25.1 contains a patch with a fix to use the proper counters to calculate the write offsets.

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
Secondary4.08.7HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Red
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Red
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches

nlnetlabs
nlnetlabs
>>unbound>>Versions before 1.25.1(exclusive)
cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-824Secondarysep@nlnetlabs.nl
CWE ID: CWE-824
Type: Secondary
Source: sep@nlnetlabs.nl
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42959.txtsep@nlnetlabs.nl
Mitigation
Vendor Advisory
Hyperlink: https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42959.txt
Source: sep@nlnetlabs.nl
Resource:
Mitigation
Vendor Advisory

Change History

0
Information is not available yet

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Matching Score-8
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||
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Known To Be Used In Ransomware Campaigns?-Not Available
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Matching Score-8
Assigner-NLnet Labs
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||
7 Day CHG~0.00%
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Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
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Matching Score-8
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ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
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||
7 Day CHG~0.00%
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
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Action-Not Available
Vendor-nlnetlabsn/aDebian GNU/Linux
Product-unbounddebian_linuxn/a
CWE ID-CWE-617
Reachable Assertion
CVE-2019-25036
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-1.02% / 77.64%
||
7 Day CHG~0.00%
Published-27 Apr, 2021 | 05:17
Updated-05 Aug, 2024 | 03:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

Action-Not Available
Vendor-nlnetlabsn/aDebian GNU/Linux
Product-unbounddebian_linuxn/a
CWE ID-CWE-617
Reachable Assertion
CVE-2019-25037
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-1.03% / 77.69%
||
7 Day CHG~0.00%
Published-27 Apr, 2021 | 05:17
Updated-19 Nov, 2024 | 14:58
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy via an invalid packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

Action-Not Available
Vendor-nlnetlabsn/aDebian GNU/Linux
Product-unbounddebian_linuxn/a
CWE ID-CWE-617
Reachable Assertion
CVE-2019-25040
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-1.02% / 77.64%
||
7 Day CHG~0.00%
Published-27 Apr, 2021 | 05:16
Updated-05 Aug, 2024 | 03:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

Action-Not Available
Vendor-nlnetlabsn/aDebian GNU/Linux
Product-unbounddebian_linuxn/a
CWE ID-CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
CVE-2019-16866
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-1.25% / 79.71%
||
7 Day CHG~0.00%
Published-03 Oct, 2019 | 18:53
Updated-05 Aug, 2024 | 01:24
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.

Action-Not Available
Vendor-nlnetlabsn/aCanonical Ltd.
Product-ubuntu_linuxunboundn/a
CWE ID-CWE-755
Improper Handling of Exceptional Conditions
CWE ID-CWE-908
Use of Uninitialized Resource
CVE-2024-1931
Matching Score-8
Assigner-NLnet Labs
ShareView Details
Matching Score-8
Assigner-NLnet Labs
CVSS Score-7.5||HIGH
EPSS-6.75% / 91.49%
||
7 Day CHG~0.00%
Published-07 Mar, 2024 | 09:17
Updated-13 Feb, 2025 | 17:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Denial of service when trimming EDE text on positive replies

NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses with size higher than the client's advertised buffer size. Before removing all the EDE records however, it would try to see if trimming the extra text fields on those records would result in an acceptable size while still retaining the EDE codes. Due to an unchecked condition, the code that trims the text of the EDE records could loop indefinitely. This happens when Unbound would reply with attached EDE information on a positive reply and the client's buffer size is smaller than the needed space to include EDE records. The vulnerability can only be triggered when the 'ede: yes' option is used; non default configuration. From version 1.19.2 on, the code is fixed to avoid looping indefinitely.

Action-Not Available
Vendor-nlnetlabsNLnet LabsnlnetlabsFedora Project
Product-unboundfedoraUnboundunbound
CWE ID-CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
CVE-2024-1622
Matching Score-8
Assigner-NLnet Labs
ShareView Details
Matching Score-8
Assigner-NLnet Labs
CVSS Score-7.5||HIGH
EPSS-0.20% / 42.43%
||
7 Day CHG~0.00%
Published-26 Feb, 2024 | 13:35
Updated-27 Feb, 2025 | 03:05
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Routinator terminates when RTR connection is reset too quickly after opening

Due to a mistake in error checking, Routinator will terminate when an incoming RTR connection is reset by the peer too quickly after opening.

Action-Not Available
Vendor-nlnetlabsNLnet LabsFedora Project
Product-fedoraroutinatorRoutinator
CWE ID-CWE-253
Incorrect Check of Function Return Value
CWE ID-CWE-754
Improper Check for Unusual or Exceptional Conditions
CVE-2023-50387
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-43.21% / 97.58%
||
7 Day CHG-0.49%
Published-14 Feb, 2024 | 00:00
Updated-04 Nov, 2025 | 19:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

Action-Not Available
Vendor-thekelleysnicpowerdnsnlnetlabsn/aFedora ProjectInternet Systems Consortium, Inc.Microsoft CorporationRed Hat, Inc.
Product-knot_resolverrecursorenterprise_linuxbindwindows_server_2012windows_server_2008unbounddnsmasqwindows_server_2022windows_server_2022_23h2fedorawindows_server_2019windows_server_2016n/a
CWE ID-CWE-770
Allocation of Resources Without Limits or Throttling
CVE-2023-39914
Matching Score-8
Assigner-NLnet Labs
ShareView Details
Matching Score-8
Assigner-NLnet Labs
CVSS Score-7.5||HIGH
EPSS-0.30% / 54.11%
||
7 Day CHG+0.06%
Published-13 Sep, 2023 | 14:17
Updated-12 Sep, 2024 | 13:22
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BER/CER/DER decoder panics on invalid input

NLnet Labs' bcder library up to and including version 0.7.2 panics while decoding certain invalid input data rather than rejecting the data with an error. This can affect both the actual decoding stage as well as accessing content of types that utilized delayed decoding.

Action-Not Available
Vendor-nlnetlabsNLnet Labs
Product-bcderbcder
CWE ID-CWE-232
Improper Handling of Undefined Values
CWE ID-CWE-240
Improper Handling of Inconsistent Structural Elements
CVE-2023-24826
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-5.9||MEDIUM
EPSS-0.77% / 74.00%
||
7 Day CHG~0.00%
Published-30 May, 2023 | 16:07
Updated-10 Jan, 2025 | 16:54
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Usage of Uninitialized Timer during forwarding of Fragments with SFR

RIOT-OS, an operating system for Internet of Things (IoT) devices, contains a network stack with the ability to process 6LoWPAN frames. Prior to version 2023.04, an attacker can send crafted frames to the device to trigger the usage of an uninitialized object leading to denial of service. This issue is fixed in version 2023.04. As a workaround, disable fragment forwarding or SFR.

Action-Not Available
Vendor-riot-osRIOT-OS
Product-riotRIOT
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2018-11803
Matching Score-4
Assigner-Apache Software Foundation
ShareView Details
Matching Score-4
Assigner-Apache Software Foundation
CVSS Score-7.5||HIGH
EPSS-6.57% / 91.35%
||
7 Day CHG~0.00%
Published-05 Feb, 2019 | 17:00
Updated-17 Sep, 2024 | 01:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Subversion's mod_dav_svn Apache HTTPD module versions 1.11.0 and 1.10.0 to 1.10.3 will crash after dereferencing an uninitialized pointer if the client omits the root path in a recursive directory listing operation.

Action-Not Available
Vendor-Canonical Ltd.The Apache Software Foundation
Product-ubuntu_linuxsubversionApache Subversion
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2026-39458
Matching Score-4
Assigner-F5, Inc.
ShareView Details
Matching Score-4
Assigner-F5, Inc.
CVSS Score-8.7||HIGH
EPSS-0.10% / 27.01%
||
7 Day CHG~0.00%
Published-13 May, 2026 | 14:12
Updated-13 May, 2026 | 16:27
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BIG-IP DNS Cache vulnerability

When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Action-Not Available
Vendor-F5, Inc.
Product-BIG-IP
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2022-43606
Matching Score-4
Assigner-Talos
ShareView Details
Matching Score-4
Assigner-Talos
CVSS Score-7.5||HIGH
EPSS-0.66% / 71.63%
||
7 Day CHG~0.00%
Published-16 Mar, 2023 | 20:02
Updated-03 Aug, 2024 | 13:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A use-of-uninitialized-pointer vulnerability exists in the Forward Open connection_management_entry functionality of EIP Stack Group OpENer development commit 58ee13c. A specially-crafted EtherNet/IP request can lead to use of a null pointer, causing the server to crash. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.

Action-Not Available
Vendor-opener_projectEIP Stack Groupopener_project
Product-openerOpENeropener
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2026-28691
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-7.5||HIGH
EPSS-0.06% / 19.82%
||
7 Day CHG~0.00%
Published-09 Mar, 2026 | 21:40
Updated-11 Mar, 2026 | 17:40
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
ImageMagick has an uninitialized pointer dereference in JBIG decoder

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, an uninitialized pointer dereference vulnerability exists in the JBIG decoder due to a missing check. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

Action-Not Available
Vendor-ImageMagick Studio LLC
Product-imagemagickImageMagick
CWE ID-CWE-252
Unchecked Return Value
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2022-38138
Matching Score-4
Assigner-Cybersecurity and Infrastructure Security Agency (CISA) Industrial Control Systems (ICS)
ShareView Details
Matching Score-4
Assigner-Cybersecurity and Infrastructure Security Agency (CISA) Industrial Control Systems (ICS)
CVSS Score-7.5||HIGH
EPSS-0.09% / 25.91%
||
7 Day CHG~0.00%
Published-11 Oct, 2022 | 00:00
Updated-16 Apr, 2025 | 16:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

The Triangle Microworks IEC 61850 Library (Any client or server using the C language library with a version number of 11.2.0 or earlier and any client or server using the C++, C#, or Java language library with a version number of 5.0.1 or earlier) and 60870-6 (ICCP/TASE.2) Library (Any client or server using a C++ language library with a version number of 4.4.3 or earlier) are vulnerable to access given to a small number of uninitialized pointers within their code. This could allow an attacker to target any client or server using the affected libraries to cause a denial-of-service condition.

Action-Not Available
Vendor-trianglemicroworksTriangle Microworks
Product-iec_61850_software_libraryiec_60870-6_software_libraryLibrary: IEC 60870-6 (ICCP/Tase.2)Library: IEC 61850
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2026-2100
Matching Score-4
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-4
Assigner-Red Hat, Inc.
CVSS Score-5.3||MEDIUM
EPSS-0.09% / 25.97%
||
7 Day CHG~0.00%
Published-26 Mar, 2026 | 20:01
Updated-02 Jun, 2026 | 20:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
P11-kit: null dereference via c_derivekey with specific null parameters

A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states.

Action-Not Available
Vendor-p11-kit_projectRed Hat, Inc.
Product-enterprise_linuxhardened_imagesp11-kitRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7Red Hat Insights proxy 1.5Red Hat Hardened ImagesRed Hat Update Infrastructure 5Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9Red Hat OpenShift Container Platform 4
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2022-29055
Matching Score-4
Assigner-Fortinet, Inc.
ShareView Details
Matching Score-4
Assigner-Fortinet, Inc.
CVSS Score-7.5||HIGH
EPSS-0.71% / 72.72%
||
7 Day CHG~0.00%
Published-10 Oct, 2022 | 00:00
Updated-25 Oct, 2024 | 13:29
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A access of uninitialized pointer in Fortinet FortiOS version 7.2.0, 7.0.0 through 7.0.5, 6.4.0 through 6.4.8, 6.2.0 through 6.2.10, 6.0.x, FortiProxy version 7.0.0 through 7.0.4, 2.0.0 through 2.0.9, 1.2.x allows a remote unauthenticated or authenticated attacker to crash the sslvpn daemon via an HTTP GET request.

Action-Not Available
Vendor-Fortinet, Inc.
Product-fortiproxyfortiosFortinet FortiOS, FortiProxy
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2024-33608
Matching Score-4
Assigner-F5, Inc.
ShareView Details
Matching Score-4
Assigner-F5, Inc.
CVSS Score-7.5||HIGH
EPSS-0.31% / 54.35%
||
7 Day CHG~0.00%
Published-08 May, 2024 | 15:01
Updated-21 Oct, 2025 | 11:38
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BIG-IP IPsec vulnerability

When IPsec is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Action-Not Available
Vendor-F5, Inc.
Product-big-ip_global_traffic_managerbig-ip_application_acceleration_managerbig-ip_carrier-grade_natbig-ip_ddos_hybrid_defenderbig-ip_advanced_firewall_managerbig-ip_policy_enforcement_managerbig-ip_local_traffic_managerbig-ip_webacceleratorbig-ip_access_policy_managerbig-ip_advanced_web_application_firewallbig-ip_fraud_protection_servicebig-ip_analyticsbig-ip_ssl_orchestratorbig-ip_edge_gatewaybig-ip_link_controllerbig-ip_container_ingress_servicesbig-ip_application_security_managerbig-ip_automation_toolchainbig-ip_domain_name_systembig-ip_application_visibility_and_reportingbig-ip_websafeBIG-IPbig-ip
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2025-59478
Matching Score-4
Assigner-F5, Inc.
ShareView Details
Matching Score-4
Assigner-F5, Inc.
CVSS Score-8.7||HIGH
EPSS-0.09% / 25.06%
||
7 Day CHG~0.00%
Published-15 Oct, 2025 | 13:55
Updated-26 Feb, 2026 | 16:57
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
BIG-IP AFM DoS protection profile vulnerability

When a BIG-IP AFM denial-of-service (DoS) protection profile is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Action-Not Available
Vendor-F5, Inc.
Product-big-ip_advanced_firewall_managerBIG-IP
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2022-22236
Matching Score-4
Assigner-Juniper Networks, Inc.
ShareView Details
Matching Score-4
Assigner-Juniper Networks, Inc.
CVSS Score-7.5||HIGH
EPSS-0.45% / 63.88%
||
7 Day CHG~0.00%
Published-18 Oct, 2022 | 02:46
Updated-10 May, 2025 | 02:37
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Junos OS: SRX Series and MX Series: When specific valid SIP packets are received the PFE will crash

An Access of Uninitialized Pointer vulnerability in SIP Application Layer Gateway (ALG) of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When specific valid SIP packets are received the PFE will crash and restart. This issue affects Juniper Networks Junos OS on SRX Series and MX Series: 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2; 22.1 versions prior to 22.1R1-S1, 22.1R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1.

Action-Not Available
Vendor-Juniper Networks, Inc.
Product-srx345mx2008mx960mx240srx5800srx110srx4000srx550_hmsrx220srx240h2mx2010mx5srx5400srx100srx3400srx300srx550mx104junosmx80srx240msrx210srx1500srx380srx4200srx340mx10008mx150srx4100mx10srx240mx2020srx3600mx10003srx5000mx10016srx1400mx10000mx204mx480srx320srx5600mx40srx650srx4600srx550mJunos OS
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2020-8110
Matching Score-4
Assigner-Bitdefender
ShareView Details
Matching Score-4
Assigner-Bitdefender
CVSS Score-5.9||MEDIUM
EPSS-0.28% / 51.48%
||
7 Day CHG~0.00%
Published-02 Oct, 2020 | 09:55
Updated-16 Sep, 2024 | 21:03
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Bitdefender ceva_emu.cvd module denial-of-service (VA-8766)

A vulnerability has been discovered in the ceva_emu.cvd module that results from a lack of proper validation of user-supplied data, which can result in a pointer that is fetched from uninitialized memory. This can lead to denial-of-service. This issue affects: Bitdefender Engines version 7.84897 and prior versions.

Action-Not Available
Vendor-Bitdefender
Product-enginesBitdefender Engines
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2022-22198
Matching Score-4
Assigner-Juniper Networks, Inc.
ShareView Details
Matching Score-4
Assigner-Juniper Networks, Inc.
CVSS Score-7.5||HIGH
EPSS-0.52% / 67.26%
||
7 Day CHG~0.00%
Published-14 Apr, 2022 | 15:51
Updated-17 Sep, 2024 | 02:57
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Junos OS: MX MS-MPC or MS-MIC, or SRX SPC crashes if it receives a SIP message with a specific contact header format

An Access of Uninitialized Pointer vulnerability in the SIP ALG of Juniper Networks Junos OS allows an unauthenticated network-based attacker to cause a Denial of Service (DoS). Continued receipt of these specific packets will cause a sustained Denial of Service condition. On all MX and SRX platforms, if the SIP ALG is enabled, an MS-MPC or MS-MIC, or SPC will crash if it receives a SIP message with a specific contact header format. This issue affects Juniper Networks Junos OS on MX Series and SRX Series: 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect versions prior to 20.4R1.

Action-Not Available
Vendor-Juniper Networks, Inc.
Product-srx345mx2008mx960mx240srx5800srx110srx4000srx550_hmsrx220srx240h2mx2010mx5srx5400srx100srx3400srx300srx550mx104junosmx80srx210srx1500srx380srx4200srx340mx10008mx150srx4100mx10srx240mx2020srx3600mx10003srx5000mx10016srx1400mx10000mx204mx480srx320srx5600mx40srx650srx4600srx550mJunos OS
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2020-27778
Matching Score-4
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-4
Assigner-Red Hat, Inc.
CVSS Score-7.5||HIGH
EPSS-1.12% / 78.60%
||
7 Day CHG~0.00%
Published-03 Dec, 2020 | 16:46
Updated-04 Aug, 2024 | 16:25
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A flaw was found in Poppler in the way certain PDF files were converted into HTML. A remote attacker could exploit this flaw by providing a malicious PDF file that, when processed by the 'pdftohtml' program, would crash the application causing a denial of service.

Action-Not Available
Vendor-n/aDebian GNU/LinuxRed Hat, Inc.freedesktop.org
Product-popplerdebian_linuxenterprise_linuxpoppler
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2020-17469
Matching Score-4
Assigner-MITRE Corporation
ShareView Details
Matching Score-4
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.69% / 72.34%
||
7 Day CHG~0.00%
Published-11 Dec, 2020 | 22:39
Updated-04 Aug, 2024 | 13:53
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An issue was discovered in FNET through 4.6.4. The code for IPv6 fragment reassembly tries to access a previous fragment starting from a network incoming fragment that still doesn't have a reference to the previous one (which supposedly resides in the reassembly list). When faced with an incoming fragment that belongs to a non-empty fragment list, IPv6 reassembly must check that there are no empty holes between the fragments: this leads to an uninitialized pointer dereference in _fnet_ip6_reassembly in fnet_ip6.c, and causes Denial-of-Service.

Action-Not Available
Vendor-butokn/a
Product-fnetn/a
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2024-26004
Matching Score-4
Assigner-CERT@VDE
ShareView Details
Matching Score-4
Assigner-CERT@VDE
CVSS Score-7.5||HIGH
EPSS-0.47% / 65.24%
||
7 Day CHG~0.00%
Published-12 Mar, 2024 | 08:12
Updated-23 Jan, 2025 | 18:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
PHOENIX CONTACT: DoS of a control agent due to access of a uninitialized pointer in CHARX Series

An unauthenticated remote attacker can DoS a control agent due to access of a uninitialized pointer which may prevent or disrupt the charging functionality.

Action-Not Available
Vendor-Phoenix Contact GmbH & Co. KG
Product-charx_sec-3150_firmwarecharx_sec-3050charx_sec-3000_firmwarecharx_sec-3100_firmwarecharx_sec-3100charx_sec-3000charx_sec-3150charx_sec-3050_firmwareCHARX SEC-3050CHARX SEC-3000CHARX SEC-3150CHARX SEC-3100charx_sec_3150charx_sec_3050charx_sec_3100charx_sec_3000
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2025-2284
Matching Score-4
Assigner-Tenable Network Security, Inc.
ShareView Details
Matching Score-4
Assigner-Tenable Network Security, Inc.
CVSS Score-7.5||HIGH
EPSS-6.80% / 91.52%
||
7 Day CHG~0.00%
Published-13 Mar, 2025 | 16:35
Updated-15 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
Santesoft Sante PACS Server Access of Uninitialized Pointer DoS

A denial-of-service vulnerability exists in the "GetWebLoginCredentials" function in "Sante PACS Server.exe".

Action-Not Available
Vendor-Santesoft LTD
Product-Sante PACS Server
CWE ID-CWE-824
Access of Uninitialized Pointer
CVE-2025-2173
Matching Score-4
Assigner-VulDB
ShareView Details
Matching Score-4
Assigner-VulDB
CVSS Score-6.9||MEDIUM
EPSS-0.28% / 51.44%
||
7 Day CHG~0.00%
Published-11 Mar, 2025 | 06:31
Updated-03 Oct, 2025 | 00:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer

A vulnerability was found in libzvbi up to 0.2.43. It has been classified as problematic. Affected is the function vbi_strndup_iconv_ucs2 of the file src/conv.c. The manipulation of the argument src_length leads to uninitialized pointer. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.2.44 is able to address this issue. The patch is identified as 8def647eea27f7fd7ad33ff79c2d6d3e39948dce. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.

Action-Not Available
Vendor-zapping-vbin/a
Product-zvbilibzvbi
CWE ID-CWE-824
Access of Uninitialized Pointer
CWE ID-CWE-908
Use of Uninitialized Resource
Details not found