CVE-2025-11561

CVE-2025-11561 · Sssd: sssd default kerberos configuration allows privilege escalation on ad-joined linux systems

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This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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.

CVSS 8.8 · High · EPSS 0.8%

Published

2025-10-09T13:37:53.089Z

Updated

2026-08-31T16:51:32.014Z

Stack: system

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