Critical
Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships
Type: advisorySources: Official CVE List
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.
- Products
- Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.6 Extended Update Support
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-11861
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 08:57 UTC · Revision 2
Source evidence
Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships
core-cve · Original sourcePublished 20 Aug 2026, 10:39 UTC
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.
cve:CVE-2026-11861
Red Hat Enterprise Linux 10
Fixed versions: Not specified
Red Hat Enterprise Linux 10.0 Extended Update Support
Fixed versions: Not specified
Red Hat Enterprise Linux 8
Fixed versions: Not specified
Red Hat Enterprise Linux 8
Fixed versions: Not specified
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Fixed versions: Not specified
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Fixed versions: Not specified
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Fixed versions: Not specified
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Fixed versions: Not specified
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Fixed versions: Not specified
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Fixed versions: Not specified
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Fixed versions: Not specified
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Fixed versions: Not specified
Red Hat Enterprise Linux 9
Fixed versions: Not specified
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Fixed versions: Not specified
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Fixed versions: Not specified
Red Hat Enterprise Linux 9.6 Extended Update Support
Fixed versions: Not specified
Red Hat Enterprise Linux 6
Fixed versions: Not specified
Red Hat Enterprise Linux 7
Fixed versions: Not specified
Complete source record
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