CVE-2025-11561

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-11561
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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/security/cve/CVE-2025-11561
https://blog.async.sg/kerberos-ldr
https://bugzilla.redhat.com/show_bug.cgi?id=2402727
Configurations

No configuration.

History

10 Oct 2025, 14:15

Type Values Removed Values Added
Summary (en) A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, SSSD does not enable the Kerberos local authentication plugin (sssd_krb5_localauth_plugin), allowing an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users. This can result in unauthorized access or privilege escalation on domain-joined Linux hosts. (en) 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.

09 Oct 2025, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-10-09 14:15

Updated : 2025-10-10 14:15

NVD link : CVE-2025-11561

Mitre link : CVE-2025-11561

CVE.ORG link : CVE-2025-11561

JSON object : View

Products Affected

No product.

CWE
CWE-269

Improper Privilege Management