CVE-2026-11861

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-20. a secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
Trending — 3 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 9.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.6
EG Score
9.6(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

August 20, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Aug 20, 2026
Patch available. Sources: redhat.
redhat

2487472 – (CVE-2026-11861) CVE-2026-11861 FreeIPA: idm: ipa: FreeIPA: Obtaining TGS with impersonating cname through trust relationships

https://bugzilla.redhat.com/show_bug.cgi?id=2487472
redhat Patch Available

CVE-2026-11861 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-11861

Vendor Advisories for CVE-2026-11861(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 14× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 08:55 UTCGHSA enrichment
  2. 2026-08-21 05:13 UTCGHSA enrichment
  3. 2026-08-21 01:31 UTCGHSA enrichment
  4. 2026-08-20 21:50 UTCGHSA enrichment
  5. 2026-08-20 18:08 UTCGHSA enrichment
  6. 2026-08-20 14:25 UTCEG score recompute
  7. 2026-08-20 14:25 UTCGHSA enrichment
  8. 2026-08-20 14:08 UTCEG score recompute
  9. 2026-08-20 14:08 UTCGHSA enrichment
  10. 2026-08-20 13:11 UTCEG score recompute
  11. 2026-08-20 13:11 UTCGHSA enrichment
  12. 2026-08-20 11:17 UTCEG score recompute
  13. 2026-08-20 10:47 UTCEG score recompute
  14. 2026-08-20 10:46 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-11861?
CVE-2026-11861 is a critical vulnerability published on August 20, 2026. 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…
When was CVE-2026-11861 disclosed?
CVE-2026-11861 was first published in the National Vulnerability Database on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-11861?
CVE-2026-11861 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-11861?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11861, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-11861

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