Vulnerability intelligence

CVE-2026-11861

Red Hat Red Hat Enterprise Linux 10 CWE-266

A flaw was found in FreeIPA. When a trust relationship is configured between FreeIPA and Active Directory, Active Directory users can bypass authentication for FreeIPA services, including the portal, SMB server, and LDAP directory. This is possible by impersonating a client name in the Ticket Granting Service (TGS) due to FreeIPA services not verifying Privilege Attribute Certificate (PAC) certificates. This vulnerability could allow an authenticated Active Directory user to escalate their privileges within the FreeIPA domain.

CVSS Score

9.6

Critical

EPSS — Exploit Probability

0.2%

Riskier than 12% of all CVEs · checked 2026-10-04

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

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