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Vulnerability Details :

CVE-2020-3992

Summary
Assigner-vmware
Assigner Org ID-dcf2e128-44bd-42ed-91e8-88f912c1401d
Published At-20 Oct, 2020 | 16:11
Updated At-21 Oct, 2025 | 23:35
Rejected At-
Credits

VMware ESXi OpenSLP Use-After-Free Vulnerability

VMware ESXi OpenSLP contains a use-after-free vulnerability that allows an attacker residing in the management network with access to port 427 to perform remote code execution.

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–¼Known Exploited Vulnerabilities (KEV)
cisa.gov
Vendor:
VMware (Broadcom Inc.)VMware
Product:ESXi
Added At:03 Nov, 2021
Due At:03 May, 2022

VMware ESXi OpenSLP Use-After-Free Vulnerability

VMware ESXi OpenSLP contains a use-after-free vulnerability that allows an attacker residing in the management network with access to port 427 to perform remote code execution.

Used in Ransomware

:

Known

CWE

:
CWE-416

Required Action:

Apply updates per vendor instructions.

Additional Notes:

https://nvd.nist.gov/vuln/detail/CVE-2020-3992
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:vmware
Assigner Org ID:dcf2e128-44bd-42ed-91e8-88f912c1401d
Published At:20 Oct, 2020 | 16:11
Updated At:21 Oct, 2025 | 23:35
Rejected At:
â–¼CVE Numbering Authority (CNA)

OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.

Affected Products
Vendor
n/a
Product
VMware ESXi
Versions
Affected
  • VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG)
Problem Types
TypeCWE IDDescription
textN/ARemote code execution vulnerability
Type: text
CWE ID: N/A
Description: Remote code execution vulnerability
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.vmware.com/security/advisories/VMSA-2020-0023.html
x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
x_refsource_MISC
Hyperlink: https://www.vmware.com/security/advisories/VMSA-2020-0023.html
Resource:
x_refsource_MISC
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
Resource:
x_refsource_MISC
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
Resource:
x_refsource_MISC
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://www.vmware.com/security/advisories/VMSA-2020-0023.html
x_refsource_MISC
x_transferred
https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
x_refsource_MISC
x_transferred
https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
x_refsource_MISC
x_transferred
Hyperlink: https://www.vmware.com/security/advisories/VMSA-2020-0023.html
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
Resource:
x_refsource_MISC
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-416CWE-416 Use After Free
Type: CWE
CWE ID: CWE-416
Description: CWE-416 Use After Free
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
kev
dateAdded:
2021-11-03
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
CVE-2020-3992 added to CISA KEV2021-11-03 00:00:00
Event: CVE-2020-3992 added to CISA KEV
Date: 2021-11-03 00:00:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992
government-resource
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992
Resource:
government-resource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@vmware.com
Published At:20 Oct, 2020 | 17:15
Updated At:30 Oct, 2025 | 20:07

OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
2021-11-032022-05-03VMware ESXi OpenSLP Use-After-Free VulnerabilityApply updates per vendor instructions.
Date Added: 2021-11-03
Due Date: 2022-05-03
Vulnerability Name: VMware ESXi OpenSLP Use-After-Free Vulnerability
Required Action: Apply updates per vendor instructions.
Metrics
TypeVersionBase scoreBase severityVector
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary2.010.0HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Primary
Version: 2.0
Base score: 10.0
Base severity: HIGH
Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C
CPE Matches

VMware (Broadcom Inc.)
vmware
>>cloud_foundation>>Versions from 3.0(inclusive) to 3.10.1.2(exclusive)
cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>cloud_foundation>>Versions from 4.0(inclusive) to 4.1.0.1(exclusive)
cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:-:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:2:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201701001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201703001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201703002:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201704001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707101:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707102:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707103:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707201:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707202:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707203:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707204:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707205:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707206:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707207:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707208:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707209:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707210:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707211:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707212:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707213:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707214:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707215:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707216:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707217:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707218:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707219:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707220:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201707221:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201710001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201712001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201803001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201806001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201808001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201810001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201810002:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201811001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201811002:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201811301:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201901001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201903001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201905001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201908001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201910001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-20191004001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201911001:*:*:*:*:*:*
VMware (Broadcom Inc.)
vmware
>>esxi>>6.5
cpe:2.3:o:vmware:esxi:6.5:650-201911401:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-416Primarynvd@nist.gov
CWE-416Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-416
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-416
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://www.vmware.com/security/advisories/VMSA-2020-0023.htmlsecurity@vmware.com
Patch
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1377/security@vmware.com
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-1385/security@vmware.com
Third Party Advisory
VDB Entry
https://www.vmware.com/security/advisories/VMSA-2020-0023.htmlaf854a3a-2127-422b-91ae-364da2661108
Patch
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1377/af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-1385/af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource
Hyperlink: https://www.vmware.com/security/advisories/VMSA-2020-0023.html
Source: security@vmware.com
Resource:
Patch
Vendor Advisory
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
Source: security@vmware.com
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
Source: security@vmware.com
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://www.vmware.com/security/advisories/VMSA-2020-0023.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Patch
Vendor Advisory
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
VDB Entry
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
US Government Resource

Change History

0
Information is not available yet

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