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CVE-2026-11861

Freeipa privilege escalation

9.6 CRITICALEPSS 0.22%
  1. Published20 Aug 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

Freeipa< 4.13.3
Redhat Enterprise Linux10.0 · 7.0 · 8.0 · 9.0

Remediation

Fixed in
Freeipa≥ 4.13.3

References

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Frequently asked

Is CVE-2026-11861 being actively exploited?

CVE-2026-11861 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.22%.

How severe is CVE-2026-11861?

CVE-2026-11861 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.22% probability of exploitation.

Which products are affected by CVE-2026-11861?

Affected products include Freeipa, Redhat Enterprise Linux.

How do I fix CVE-2026-11861?

Upgrade affected software to a fixed version, for example Freeipa 4.13.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-11861 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.