CVE-2026-11861: Freeipa

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Freeipa Freeipa: before 4.13.3 (fixed in 4.13.3)
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only; version 9.0 only; version 10.0 only

Published 2026-08-20. Last modified 2026-09-28.