CVE-2020-25722

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-02-18 · updated 2026-06-17
Weakness: CWE-863

Description

Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.

Affected products

Canonical Ubuntu Linux: 18.04, 20.04, 21.04, 21.10
Debian Linux: 9.0, 10.0
Fedoraproject Fedora: 33, 34, 35
Samba: from 4.0.0 before 4.13.14; from 4.14.0 before 4.14.10; from 4.15.0 before 4.15.2 — fixed in 4.13.14, 4.14.10, 4.15.2

How to fix

Upgrade to a fixed version: Samba 4.13.14, 4.14.10, 4.15.2. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2019764
https://security.gentoo.org/glsa/202309-06
https://www.samba.org/samba/security/CVE-2020-25722.html
https://bugzilla.redhat.com/show_bug.cgi?id=2019764
https://security.gentoo.org/glsa/202309-06
https://www.samba.org/samba/security/CVE-2020-25722.html

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