CVE-2026-11861
critical · 9.6A 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.
9.6
CVSS
0.4%
EPSS (exploit prob.)
28th
EPSS percentile
2026-08-20
Published
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weaknesses
CWE-266
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| freeipa | freeipa | < 4.13.3 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
| redhat | enterprise_linux | 10.0 |
Check a specific version with /api/v1/cve/match.
References
- https://access.redhat.com/errata/RHSA-2026:70564
- https://access.redhat.com/errata/RHSA-2026:72279
- https://access.redhat.com/errata/RHSA-2026:82935
- https://access.redhat.com/errata/RHSA-2026:83083
- https://access.redhat.com/errata/RHSA-2026:83084
- https://access.redhat.com/errata/RHSA-2026:83085
- https://access.redhat.com/errata/RHSA-2026:83460
- https://access.redhat.com/errata/RHSA-2026:83461
- https://access.redhat.com/errata/RHSA-2026:89836
- https://access.redhat.com/security/cve/CVE-2026-11861
- https://bugzilla.redhat.com/show_bug.cgi?id=2487472
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-11861