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Fencer Vulns
high 8.1

CVE-2022-37966 json

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

published 2022-11-09 4 y ago modified 2026-08-10 2 mo ago also EUVD-2022-40573

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

Patch / fix

  • samba samba 4.15.13, 4.16.8, 4.17.4
  • samba Debian 14, Debian 13, Debian 12 2:4.17.4+dfsg-1

debian advisories DEBIAN-CVE-2022-37966

  • samba Ubuntu 20.04 LTS 2:4.15.13+dfsg-0ubuntu0.20.04.1
  • samba Ubuntu 22.04 LTS 2:4.15.13+dfsg-0ubuntu1

ubuntu advisories UBUNTU-CVE-2022-37966

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • samba Enterprise Storage 7 4.13.13+git.616.557146479a-150200.3.21.1
  • samba SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS +3 more 4.9.5+git.552.fec1a5e57a-150100.3.73.1
  • samba SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 +1 more 4.15.13+git.534.0d9f8ece26-3.77.1
  • samba SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +3 more 4.11.14+git.384.5dc2c21dce-150200.4.44.1
  • samba SLE Module for Basesystem 15 SP4, SLE Micro 5.3, SLE High Availability Extension 15 SP4 +2 more 4.15.13+git.591.ab36624310c-150400.3.19.1
  • samba SLES for SAP 12 SP4, SLES 12 SP4-LTSS, SLE High Availability Extension 12 SP4 +2 more 4.6.16+git.384.9fec958bed-3.76.1
  • samba SLES 12 SP2-BCL 4.4.2-38.55.1
  • samba SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Real Time 15 SP3 +11 more 4.15.13+git.540.fab3b2a46c6-150300.3.46.1

suse advisories SUSE-SU-2023:0620-1SUSE-SU-2023:0222-1SUSE-SU-2023:0164-1SUSE-SU-2023:0163-1SUSE-SU-2023:0160-1SUSE-SU-2023:0126-1

  • samba openSUSE Tumbleweed 4.17.4+git.300.305b22bfce-1.1

opensuse advisories openSUSE-SU-2024:12587-1

  • samba Alpine 3.16, Alpine 3.15 4.15.13-r0

alpine advisories ALPINE-CVE-2022-37966

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • samba Arch Linux 4.17.5-1

arch linux advisories AVG-2828

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-37966 updated cvss 8.1

samba: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.

  • Red Hat Enterprise Linux 6 samba, samba-swat, libsmbclient, samba-client, samba-common, samba-winbind, +4 more Red Hat Enterprise Linux 7 ctdb, samba, samba-dc, ctdb-tests, samba-libs, samba-pidl, +18 more Red Hat Enterprise Linux 8 ctdb, samba, libnetapi, ctdb-tests, samba-libs, samba-pidl, +24 more Red Hat Enterprise Linux 9 ctdb, samba, libldb, ldb-tools, libnetapi, samba-libs, +27 more Red Hat Storage 3 ctdb, samba, samba-dc, ctdb-tests, samba-libs, samba-pidl, +21 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

2.94% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 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
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Windows Server 2008 Service Pack 2
  • Microsoft Windows Server 2008 R2 Service Pack 1
  • Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
  • Microsoft Windows Server 2008 Service Pack 2
  • Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 (Server Core installation)
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2012 R2 (Server Core installation)
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2016 (Server Core installation)
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2019 (Server Core installation)
  • Microsoft Windows Server 2022

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.