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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History
Fri, 21 Aug 2026 00:15:00 +0000
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Thu, 20 Aug 2026 14:30:00 +0000
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Thu, 20 Aug 2026 11:00:00 +0000
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| 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. | |
| Title | Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
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| Weaknesses | CWE-266 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-08-20T13:48:25.096Z
Reserved: 2026-06-10T11:21:33.281Z
Link: CVE-2026-11861
Updated: 2026-08-20T13:48:21.609Z
Status : Awaiting Analysis
Published: 2026-08-20T11:16:19.270
Modified: 2026-08-20T14:17:08.387
Link: CVE-2026-11861
OpenCVE Enrichment
Updated: 2026-08-20T22:45:02Z