CVE-2026-11861Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.6 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-266
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:4.13.4-1.el10_2 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:4.12.2-15.el10_0.7 not affected | CNA record |
from 8080020261007080925.e581a9e4 not affected | CNA record | |
from 8080020261007080925.e581a9e4 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:4.12.2-14.el9_6.8 not affected | CNA record |
freeipa freeipa freeipa:freeipa | before 4.13.3 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 7.0; 8.0; 9.0; 10.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:70564vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72279vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:82935vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:83083vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:83084vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:83085vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:83460vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:83461vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-11861vdb-entry, x-refsource-redhat, vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2487472issue-tracking, x-refsource-redhat, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.