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CVE-2026-11861 is an authentication-bypass and privilege-escalation vulnerability in FreeIPA deployments configured with an Active Directory cross-realm trust. FreeIPA services fail to verify Privilege Attribute Certificate (PAC) data associated with Kerberos Ticket Granting Service requests. An authenticated Active Directory user may impersonate a client name in a TGS request, causing affected FreeIPA services to accept unauthorized authentication. Affected service types include the FreeIPA portal, SMB services, and the LDAP directory.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability covered by a FreeBSD local security check affecting the FreeIPA Server package on FreeBSD. The plugin supplies a CVSS v3.0 vector of AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, indicating network reachability with low attack complexity and high confidentiality and integrity impact after low-privileged access.
A vulnerability addressed by Fedora advisory FEDORA-2026-3a48220f1f, affecting the FreeIPA package on Fedora 43. The supplied CVSS v3 vector indicates network reachability, low attack complexity, low privileges required, no user interaction, and high confidentiality and integrity impact.
A FreeIPA authentication-bypass and privilege-escalation vulnerability in Active Directory trust configurations. An authenticated Active Directory user can impersonate a client in TGS requests because affected FreeIPA services do not validate PAC certificates, potentially escalating privileges in the FreeIPA domain.
A vulnerability referenced in Fedora advisory FEDORA:2026-903d904933 affecting Fedora 44 packages including freeipa and samba; the specific flaw type is not described in the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.