Vulnerability record · CVE-2026-11861 · published 20 August 2026

CVE-2026-11861: Freeipa vulnerability

Freeipa · Freeipa

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.

8.1 CVSS 3.1 High EPSS 0.21% · top 89.7% CWE-266 · CWE-266

8.1CVSS 3.1 base score

0.21%EPSS exploitation probability, 30 days

NoNot in CISA KEV

2Affected product versions listed by NVD

3References

24 Sep 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Freeipa Freeipa

Enterprise Linux Redhat

References

Link	Tags
https://access.redhat.com/errata/RHSA-2026:70564
https://access.redhat.com/security/cve/CVE-2026-11861	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2487472	Issue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-11861), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.