Security Advisory

CVE-2026-11861

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-20 10:39:08

Last updated 2026-08-20 13:48:25

Assigner redhat

CVSS score 9.6

State PUBLISHED

Description

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.

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