CVE-2022-45141

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-06 · updated 2026-06-17
Weakness: CWE-328

Description

Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).

Affected products

Samba: before 4.15.13; from 4.16.0 before 4.16.8 — fixed in 4.15.13, 4.16.8

How to fix

Upgrade to a fixed version: Samba 4.15.13, 4.16.8. Check the vendor advisory for mitigations.

References

https://security.gentoo.org/glsa/202309-06
https://www.samba.org/samba/security/CVE-2022-45141.html
https://security.gentoo.org/glsa/202309-06
https://www.samba.org/samba/security/CVE-2022-45141.html

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