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High 8.8Published Oct 9, 2025

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

Updated under an hour ago ()

Does this affect you?

It affects Red Hat Enterprise Linux 10 and 8 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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 (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-269
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
redhat
NVD analysis
Deferred
Record last updated
Aug 31, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
from 0:2.10.2-3.el10_0.3 not affected
CNA record
from 0:1.16.5-10.el7_9.17 not affected
CNA record
from 0:2.2.3-20.el8_2.3 not affected
CNA record
from 0:2.4.0-9.el8_4.4 not affected
CNA record
from 0:2.6.2-4.el8_6.4 not affected
CNA record
from 0:2.6.2-4.el8_6.4 not affected
CNA record
from 0:2.9.4-6.el9_4.4 not affected
CNA record
from 412.86.202601061735-0 not affected
CNA record
from 7 not affected
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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