VULNERABILITY INTELLIGENCE
CVE-2026-11861
CVSS score9.6 CRITICAL
EPSS probability0.35%
CISA KEVNot currently listed
Published2026-08-20
Last modified2026-11-02
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
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.
Weakness classification
- secalert@redhat.com: CWE-266