CVE-2026-11861

CRITICALNVD 8.19.6▲
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-20. NVD baseline CVSS 8.1; sources differ by 1.5.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 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: 0.2%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
8.1
EG Score
9.6CRITICALmedium confidence
EG Risk
43
EG Risk 43/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

September 28, 2026

Advisory Details (2)

Auto-updated Aug 22, 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.

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatipa-0:4.13.4-1.el10_22026-09-28redhat
redhatipa-0:4.13.4-1.el9_82026-09-24redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
freeipa4.10.1+dfsg1-1+exp1 ... 4.9.11-2 (19 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
freeipa4.12.4-1, 4.12.4-2, 4.13.1-1
  • every version on: no fix on record
—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 72× in last 7d / 254× 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.

Showing the most recent 100 of 390 total refreshes for this CVE.

  1. 2026-10-05 13:52 UTCVendor advisory
  2. 2026-10-05 13:52 UTCGHSA enrichment
  3. 2026-10-05 09:31 UTCVendor advisory
  4. 2026-10-05 09:31 UTCGHSA enrichment
  5. 2026-10-05 05:24 UTCVendor advisory
  6. 2026-10-05 05:24 UTCGHSA enrichment
  7. 2026-10-05 01:42 UTCEG score recompute
  8. 2026-10-05 01:42 UTCVendor advisory
  9. 2026-10-05 01:42 UTCGHSA enrichment
  10. 2026-10-04 23:21 UTCEPSS rescore
  11. 2026-10-04 21:20 UTCVendor advisory
  12. 2026-10-04 21:20 UTCGHSA enrichment
  13. 2026-10-04 13:44 UTCVendor advisory
  14. 2026-10-04 13:44 UTCGHSA enrichment
  15. 2026-10-04 10:03 UTCVendor advisory
  16. 2026-10-04 10:03 UTCGHSA enrichment
  17. 2026-10-04 06:20 UTCVendor advisory
  18. 2026-10-04 06:20 UTCGHSA enrichment
  19. 2026-10-04 02:39 UTCVendor advisory
  20. 2026-10-04 02:39 UTCGHSA enrichment
  21. 2026-10-03 20:31 UTCVendor advisory
  22. 2026-10-03 20:31 UTCGHSA enrichment
  23. 2026-10-03 16:50 UTCEG score recompute
  24. 2026-10-03 16:50 UTCVendor advisory
  25. 2026-10-03 16:50 UTCGHSA enrichment
Show 75 more
  1. 2026-10-03 14:25 UTCEPSS rescore
  2. 2026-10-03 05:39 UTCVendor advisory
  3. 2026-10-03 05:39 UTCGHSA enrichment
  4. 2026-10-03 01:55 UTCVendor advisory
  5. 2026-10-03 01:55 UTCGHSA enrichment
  6. 2026-10-02 22:14 UTCVendor advisory
  7. 2026-10-02 22:14 UTCGHSA enrichment
  8. 2026-10-02 18:32 UTCEG score recompute
  9. 2026-10-02 18:32 UTCVendor advisory
  10. 2026-10-02 18:32 UTCGHSA enrichment
  11. 2026-10-02 14:51 UTCVendor advisory
  12. 2026-10-02 14:51 UTCGHSA enrichment
  13. 2026-10-02 11:06 UTCVendor advisory
  14. 2026-10-02 11:06 UTCGHSA enrichment
  15. 2026-10-02 06:50 UTCVendor advisory
  16. 2026-10-02 06:50 UTCGHSA enrichment
  17. 2026-10-02 01:20 UTCVendor advisory
  18. 2026-10-02 01:20 UTCGHSA enrichment
  19. 2026-10-01 21:33 UTCEG score recompute
  20. 2026-10-01 21:33 UTCVendor advisory
  21. 2026-10-01 21:33 UTCGHSA enrichment
  22. 2026-10-01 19:49 UTCEPSS rescore
  23. 2026-10-01 13:07 UTCVendor advisory
  24. 2026-10-01 13:07 UTCGHSA enrichment
  25. 2026-10-01 09:25 UTCVendor advisory
  26. 2026-10-01 09:25 UTCGHSA enrichment
  27. 2026-10-01 05:42 UTCVendor advisory
  28. 2026-10-01 05:42 UTCGHSA enrichment
  29. 2026-10-01 01:21 UTCVendor advisory
  30. 2026-10-01 01:21 UTCGHSA enrichment
  31. 2026-09-30 20:32 UTCEG score recompute
  32. 2026-09-30 20:32 UTCVendor advisory
  33. 2026-09-30 20:32 UTCGHSA enrichment
  34. 2026-09-30 15:02 UTCEPSS rescore
  35. 2026-09-30 12:13 UTCVendor advisory
  36. 2026-09-30 12:13 UTCGHSA enrichment
  37. 2026-09-30 08:25 UTCEG score recompute
  38. 2026-09-30 08:25 UTCVendor advisory
  39. 2026-09-30 08:25 UTCGHSA enrichment
  40. 2026-09-29 15:20 UTCEPSS rescore
  41. 2026-09-29 05:43 UTCVendor advisory
  42. 2026-09-29 05:43 UTCGHSA enrichment
  43. 2026-09-29 02:00 UTCVendor advisory
  44. 2026-09-29 02:00 UTCGHSA enrichment
  45. 2026-09-28 21:39 UTCEG score recompute
  46. 2026-09-28 21:39 UTCVendor advisory
  47. 2026-09-28 21:39 UTCGHSA enrichment
  48. 2026-09-28 14:20 UTCEG score recompute
  49. 2026-09-28 14:20 UTCVendor advisory
  50. 2026-09-28 14:20 UTCGHSA enrichment
  51. 2026-09-28 13:50 UTCEPSS rescore
  52. 2026-09-28 10:38 UTCVendor advisory
  53. 2026-09-28 10:38 UTCGHSA enrichment
  54. 2026-09-28 09:42 UTCVendor advisory
  55. 2026-09-28 09:42 UTCGHSA enrichment
  56. 2026-09-28 07:33 UTCVendor advisory
  57. 2026-09-28 07:33 UTCGHSA enrichment
  58. 2026-09-28 03:51 UTCVendor advisory
  59. 2026-09-28 03:51 UTCGHSA enrichment
  60. 2026-09-28 00:10 UTCVendor advisory
  61. 2026-09-28 00:10 UTCGHSA enrichment
  62. 2026-09-27 19:58 UTCVendor advisory
  63. 2026-09-27 19:58 UTCGHSA enrichment
  64. 2026-09-27 16:04 UTCEG score recompute
  65. 2026-09-27 16:04 UTCVendor advisory
  66. 2026-09-27 16:04 UTCGHSA enrichment
  67. 2026-09-27 11:00 UTCVendor advisory
  68. 2026-09-27 11:00 UTCGHSA enrichment
  69. 2026-09-27 07:09 UTCVendor advisory
  70. 2026-09-27 07:09 UTCGHSA enrichment
  71. 2026-09-27 03:27 UTCEG score recompute
  72. 2026-09-27 03:27 UTCVendor advisory
  73. 2026-09-27 03:27 UTCGHSA enrichment
  74. 2026-09-26 15:58 UTCEPSS rescore
  75. 2026-09-25 11:51 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

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 on August 20, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11861 actively exploited?
CVE-2026-11861 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11861?
CVE-2026-11861 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.6 (CRITICAL).
How do I remediate CVE-2026-11861?
A fix for CVE-2026-11861 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-11861 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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