DEBIAN-CVE-2025-11561

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Source

https://security-tracker.debian.org/tracker/CVE-2025-11561

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11561.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-11561

Upstream

CVE-2025-11561

Published

2025-10-09T14:15:54Z

Modified

2026-09-01T20:05:40Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.

References

https://security-tracker.debian.org/tracker/CVE-2025-11561

Affected packages

Debian:12 / sssd

Package

Name: sssd
Purl: pkg:deb/debian/sssd?arch=source&distro=bookworm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.8.2-4

2.8.2-4+deb12u1

2.9.1-1

2.9.1-2

2.9.2-1

2.9.4-1

2.9.4-1.1~exp1

2.9.4-1.1

2.9.4-2

2.9.5-1

2.9.5-2

2.9.5-3

2.9.5-4

2.9.5-5

2.10.1-1

2.10.1-2

2.11.1-1

2.11.1-2

2.11.1-2.1

2.12.0-1

2.12.0-2

2.12.0-3~exp0

2.12.0-4

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11561.json"

Debian:13 / sssd