OnlyFm252
Windows Kerberos

CVE-2022-26931 — Windows Kerberos Elevation of Privilege Vulnerability

Critical CVSS 7.5 EPSS 0.02301 2022-05 archive

Executive Summary

None

Overview

7.5
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released May 10 2022
Last Updated May 10 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.02301 — 0.81055 percentile
NVD CVSS 7.5 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5

EPSS Score

0.02301
probability of exploitation in the next 30 days
0.81055 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

28 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5013963 (Security Update) Critical Elevation of Privilege Yes
Windows 10 for x64-based Systems 5013963 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1607 for 32-bit Systems 5013952 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1607 for x64-based Systems 5013952 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1809 for 32-bit Systems 5013941 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1809 for ARM64-based Systems 5013941 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1809 for x64-based Systems 5013941 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1909 for 32-bit Systems 5013945 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1909 for ARM64-based Systems 5013945 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 1909 for x64-based Systems 5013945 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 20H2 for 32-bit Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 20H2 for ARM64-based Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 21H1 for 32-bit Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 21H1 for ARM64-based Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 21H1 for x64-based Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 21H2 for 32-bit Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 21H2 for ARM64-based Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 10 Version 21H2 for x64-based Systems 5013942 (Security Update) Critical Elevation of Privilege Yes
Windows 11 version 21H2 for ARM64-based Systems 5013943 (Security Update) Critical Elevation of Privilege Yes
Windows 11 version 21H2 for x64-based Systems 5013943 (Security Update) Critical Elevation of Privilege Yes
Windows 7 for 32-bit Systems Service Pack 1 5014012 (Monthly Rollup) 5013999 (Security Only) Critical Elevation of Privilege 5012626 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.25954 Yes 5014012 5013999 Windows 7 for x64-based Systems Service Pack 1 5014012 (Monthly Rollup) 5013999 (Security Only) Critical Elevation of Privilege 5012626 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.25954 Yes 5014012 5013999 Windows 8.1 for 32-bit systems 5014011 (Monthly Rollup) 5014001 (Security Only) Critical Elevation of Privilege 5012670 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20371 6.3.9600.20365 Yes 5014011 5014001 Windows 8.1 for x64-based systems 5014011 (Monthly Rollup) 5014001 (Security Only) Critical Elevation of Privilege 5012670 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20371 6.3.9600.20365 Yes 5014011 5014001 Windows RT 8.1 5014025 (ServicingStackUpdate) Critical Elevation of Privilege Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 5014010 (Monthly Rollup) 5014006 (Security Only) Critical Elevation of Privilege 5012658 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21481 Yes 5014010 5014006 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5014010 (Monthly Rollup) 5014006 (Security Only) Critical Elevation of Privilege 5012658 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21481 Yes 5014010 5014006 Windows Server 2008 for x64-based Systems Service Pack 2 5014010 (Monthly Rollup) 5014006 (Security Only) Critical Elevation of Privilege 5012658 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21481 Yes 5014010 5014006 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5014010 (Monthly Rollup) 5014006 (Security Only) Critical Elevation of Privilege 5012658 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21481 Yes 5014010 5014006 Windows Server 2008 R2 for x64-based Systems Service Pack 1 5014012 (Monthly Rollup) 5013999 (Security Only) Critical Elevation of Privilege 5012626 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.25954 Yes 5014012 5013999 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5014012 (Monthly Rollup) 5013999 (Security Only) Critical Elevation of Privilege 5012626 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.25954 Yes 5014012 5013999 Windows Server 2012 5014017 (Monthly Rollup) 5014018 (Security Only) Critical Elevation of Privilege 5012650 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.2.9200.23714 Yes 5014017 5014018 Windows Server 2012 (Server Core installation) 5014017 (Monthly Rollup) 5014018 (Security Only) Critical Elevation of Privilege 5012650 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.2.9200.23714 Yes 5014017 5014018 Windows Server 2012 R2 5014011 (Monthly Rollup) 5014001 (Security Only) Critical Elevation of Privilege 5012670 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20371 6.3.9600.20365 Yes 5014011 5014001 Windows Server 2012 R2 (Server Core installation) 5014011 (Monthly Rollup) 5014001 (Security Only) Critical Elevation of Privilege 5012670 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20371 6.3.9600.20365 Yes 5014011 5014001 Windows Server 2016 5013952 (Security Update) Critical Elevation of Privilege Yes
Windows Server 2016 (Server Core installation) 5013952 (Security Update) Critical Elevation of Privilege Yes
Windows Server 2019 5013941 (Security Update) Critical Elevation of Privilege Yes
Windows Server 2019 (Server Core installation) 5013941 (Security Update) Critical Elevation of Privilege Yes
Windows Server 2022 5013944 (Security Update) Critical Elevation of Privilege Yes
Windows Server 2022 (Server Core installation) 5013944 (Security Update) Critical Elevation of Privilege Yes
Windows Server, version 20H2 (Server Core Installation) 5013942 (Security Update) Critical Elevation of Privilege Yes

Patches

8 patches
Article Type Restart
5013963 Security Update Yes
5013952 Security Update Yes
5013941 Security Update Yes
5013945 Security Update Yes
5013942 Security Update Yes
5013943 Security Update Yes
5014025 ServicingStackUpdate Yes
5013944 Security Update Yes

Known Exploits

Acknowledgments

Catalyst and Samba Team

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