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01 Record

CVE-2022-37966

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

HighPUBLISHEDCNA: microsoft
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

02 Description

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.53% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 84.6% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-08-10.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-11-09 00:00Z3 YR AGO
Last updated
2026-08-10 15:11Z2 MO AGO
Reserved
2022-08-08
Assigning CNA
microsoft
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Weaknesses
  • CWE-269Improper Privilege ManagementClass
Data version
5.2
Document digest
99c5e021e866c8768ea89c21a83cb0e1d60cfd30201e2475dcc0f600c11607d5

05 Affected products

VendorProductVersionsPlatforms
MicrosoftWindows Server 2008 Service Pack 2-x64-based Systems
MicrosoftWindows Server 2008 R2 Service Pack 1-x64-based Systems
MicrosoftWindows Server 2008 Service Pack 2-32-bit Systems
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)-32-bit Systems, x64-based Systems
MicrosoftWindows Server 2012-x64-based Systems
MicrosoftWindows Server 2012 R2-x64-based Systems
MicrosoftWindows Server 2016-x64-based Systems
MicrosoftWindows Server 2019-x64-based Systems
MicrosoftWindows Server 2022-x64-based Systems

06 References

07 Fixed in

Arch Linux

  • samba
    Fixed in 4.17.5-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • samba
    Fixed in 2:4.17.4+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • samba
    Fixed in 2:4.17.4+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • samba
    Fixed in 2:4.17.4+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • samba
    Fixed in 2:4.15.13+dfsg-0ubuntu0.20.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • samba
    Fixed in 2:4.15.13+dfsg-0ubuntu1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • samba
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • samba
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • samba
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.