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 — 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: 0%CVSS: 8.1Exploit: 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
8.1
EG Score
9.6(medium)
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
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 20, 2026

Last Modified

August 24, 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.

Affected Packages

(2 across 2 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
freeipa4.10.1+dfsg1-1+exp1 ... 4.9.11-2 (19 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
freeipa4.12.4-1, 4.12.4-2, 4.13.1-1——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 52× in last 7d / 234× 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 245 total refreshes for this CVE.

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

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 in the National Vulnerability Database on August 20, 2026, with the most recent update on August 24, 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% probability of exploitation in the next 30 days, which ranks it in the top 91.4% of all 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.
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

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