Skip to main content

FreeIPA CVE-2026-11861

| EUVDEUVD-2026-63245 HIGH
Incorrect Privilege Assignment (CWE-266)
2026-08-20 redhat GHSA-g67c-jg9c-rqh2
High
Disputed · 8.1 NVD
Share

Severity by source

Sources disagree (Medium–Critical)
Vendor (redhat) PRIMARY
CRITICAL
qualitative
NVD
8.1 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
vuln.today AI
8.1 HIGH

Network-reachable FreeIPA services accept forged PAC tickets from any authenticated AD user (PR:L); no interaction or elevated complexity is required beyond the trust configuration prerequisite, and no availability impact is described.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SUSE
CRITICAL
qualitative
Red Hat
9.6 MEDIUM
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

6
Analysis Updated
Aug 24, 2026 - 18:29 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Aug 24, 2026 - 18:22 vuln.today
cvss_changed
Severity Changed
Aug 24, 2026 - 18:22 NVD
CRITICAL HIGH
CVSS changed
Aug 24, 2026 - 18:22 NVD
9.6 (CRITICAL) 8.1 (HIGH)
Analysis Generated
Aug 20, 2026 - 11:37 vuln.today
CVE Published
Aug 20, 2026 - 10:39 nvd
CRITICAL 9.6

DescriptionNVD

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.

AnalysisAI

FreeIPA's Kerberos Ticket Granting Service fails to verify Privilege Attribute Certificate (PAC) signatures when processing cross-realm tickets from a trusted Active Directory domain, allowing any authenticated AD user to impersonate arbitrary FreeIPA principals. This grants unauthorized elevated access to FreeIPA services including the web portal, SMB server, and LDAP directory. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Two specific conditions must be simultaneously present: (1) an explicitly configured cross-realm trust relationship between FreeIPA and an Active Directory domain - this is a non-default administrative configuration that must be deliberately established; and (2) an authenticated Active Directory account in the trusted AD domain (reflected in CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 8.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) reflects network-accessible exploitation requiring only a low-privilege AD account, with high confidentiality and integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No specific patched FreeIPA package version has been confirmed in the available data - patch availability and exact fix versions must be verified directly through the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-11861 and Bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=2487472; apply available RHEL FreeIPA package updates as soon as a fix is released. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all FreeIPA deployments with configured Active Directory cross-realm trusts and document deployed versions and which critical services depend on these trusts. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-18663 MEDIUM
5.9 Aug 12

Heap corruption via double-free in 389-ds-base's LDAP control parsing allows an unauthenticated remote attacker to crash

CVE-2026-4631 CRITICAL POC
9.8 Apr 07

Remote code execution in Cockpit's web interface allows unauthenticated attackers to execute arbitrary commands on the h

CVE-2026-4480 CRITICAL POC
9.0 May 26

Remote code execution in Samba's printing subsystem allows remote attackers to inject arbitrary shell commands via craft

CVE-2026-14544 CRITICAL
9.8 Jul 03

Remote code execution and privilege escalation in HPLIP (HP Linux Imaging and Printing) affects the hpcups print filter

CVE-2026-18922 CRITICAL
9.8 Sep 07

Authentication bypass in 389 Directory Server (shipped as Red Hat Directory Server 11-13 and within RHEL 6-10) lets remo

CVE-2026-76578 CRITICAL
9.8 Sep 07

Unauthenticated privilege escalation in FreeIPA (Red Hat Identity Management) allows a remote attacker to gain genuine a

CVE-2026-5121 HIGH
7.5 Mar 30

Remote code execution in libarchive on 32-bit systems allows unauthenticated attackers to execute arbitrary code via spe

CVE-2026-28369 CRITICAL
9.1 Mar 27

HTTP request smuggling in Undertow (the embedded web server underpinning JBoss EAP, Red Hat Data Grid, and Apache Camel

CVE-2026-28368 CRITICAL
9.1 Mar 27

HTTP request smuggling in Red Hat Undertow allows remote unauthenticated attackers to bypass front-end security controls

CVE-2026-33845 CRITICAL
9.1 Apr 30

Out-of-bounds read in the GnuTLS DTLS handshake reassembly logic lets remote unauthenticated attackers trigger an intege

CVE-2026-28367 CRITICAL
9.1 Mar 27

HTTP request smuggling in Undertow allows remote unauthenticated attackers to send `\r\r\r` as a header block terminator

CVE-2026-16526 HIGH
8.8 Jul 30

Local privilege escalation in Performance Co-Pilot (PCP) on Red Hat Enterprise Linux 6 through 10 and OpenShift Containe

Vendor StatusVendor

SUSE

Severity: Critical

Share

CVE-2026-11861 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy