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    CVE-2026-11861

    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.

    Published:Aug 20, 2026
    Last Modified:Oct 30, 2026
    EPS:Aug 20, 2026
    EPSS Score:0.0035
    CVSS Score:9.6

    Affected Products

    Vendor
    Freeipa
    Product
    Freeipa
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Eus Long Life
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-266 Incorrect Privilege Assignment

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-13097 (CVSS 8.7) — A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal nam…
    CVE-2026-73198 (CVSS 7.5) — A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit a vulnerability in the `/ipa/i18n_…
    CVE-2026-73197 (CVSS 7.5) — A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit this vulnerability by sending over…
    CVE-2026-73196 (CVSS 4.3) — A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting a…
    CVE-2026-19550 (CVSS 8.2) — A flaw was found in FreeIPA. The trust-fetch-domains command is gated by a read-only permission on the trust o…
    CVE-2024-2698 (CVSS 8.8) — A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a…
    CVE-2023-5455 (CVSS 6.5) — A Cross-site request forgery vulnerability exists in ipa/session/login_password in all supported versions of I…
    CVE-2020-1722 (CVSS 5.3) — A flaw was found in all ipa versions 4.x.x through 4.8.0. When sending a very long password (>= 1,000,000 char…
    CVE-2019-10195 (CVSS 6.5) — A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versio…
    CVE-2019-14826 (CVSS 4.4) — A flaw was found in FreeIPA versions 4.5.0 and later. Session cookies were retained in the cache after logout.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-11861 — Freeipa, Redhat (Critical 9.6) | CVE-DB