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.
Metrics
Affected Vendors & Products
References
History
Mon, 24 Aug 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Freeipa
Freeipa freeipa |
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| CPEs | cpe:2.3:a:freeipa:freeipa:*:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
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| Vendors & Products |
Freeipa
Freeipa freeipa |
Fri, 21 Aug 2026 00:15:00 +0000
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| References |
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| Metrics |
threat_severity
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threat_severity
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Thu, 20 Aug 2026 14:30:00 +0000
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| Metrics |
ssvc
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Thu, 20 Aug 2026 11:00:00 +0000
| Type | Values Removed | Values Added |
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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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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-08-20T10:39:08.025Z
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 : Analyzed
Published: 2026-08-20T11:16:19.270
Modified: 2026-08-24T18:14:09.333
Link: CVE-2026-11861