CVE-2025-11561
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-09

Last updated on: 2026-03-19

Assigner: Red Hat, Inc.

Description
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.
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Meta Information
Published
2025-10-09
Last Modified
2026-03-19
Generated
2026-06-16
AI Q&A
2025-10-09
EPSS Evaluated
2026-06-15
NVD
CVE-2025-11561
Affected Vendors & Products
Showing 10 associated CPEs
Vendor Product Version / Range
redhat enterprise_linux 8.2
redhat enterprise_linux 8.8
redhat enterprise_linux 9.6
redhat enterprise_linux 7
redhat enterprise_linux 10
redhat enterprise_linux 8.6
redhat enterprise_linux 9.4
redhat enterprise_linux 9
redhat system_security_services_daemon *
redhat enterprise_linux 9.2
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
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Executive Summary

This vulnerability is a flaw in how Active Directory integrates with the System Security Services Daemon (SSSD) on Linux systems. By default, SSSD does not enable the Kerberos local authentication plugin, which allows an attacker who can modify certain Active Directory attributes (like userPrincipalName or samAccountName) to impersonate privileged users. This means the attacker can gain unauthorized access or escalate privileges on Linux hosts joined to the domain.

Impact Analysis

The vulnerability can lead to unauthorized access or privilege escalation on domain-joined Linux systems. An attacker who can modify specific Active Directory attributes could impersonate privileged users, potentially gaining control over sensitive systems or data.

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