CVE-2025-26647

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 2.1%, top 20% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.3%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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
Severity88% × 45%
Exploitation2% × 40%
Automatability0% × 15%
EPSS PROB
2.3%
EPSS %ILE
82nd
KEV
Not listed

Published

April 8, 2025

Last Modified

August 10, 2026

Advisory Details (1)

Auto-updated Aug 2, 2026
Fix referenced — no release confirmed yet. Sources: microsoft.
microsoftMentions a patch (unverified)

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26647

Vendor Advisories for CVE-2025-26647(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 7× in last 7d / 25× 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 159 total refreshes for this CVE.

  1. 2026-10-09 20:06 UTCEPSS rescore
  2. 2026-10-08 17:09 UTCEPSS rescore
  3. 2026-10-07 23:46 UTCEPSS rescore
  4. 2026-10-06 15:16 UTCEPSS rescore
  5. 2026-10-05 17:42 UTCEPSS rescore
  6. 2026-10-04 23:21 UTCEPSS rescore
  7. 2026-10-03 14:24 UTCEPSS rescore
  8. 2026-10-02 16:26 UTCEPSS rescore
  9. 2026-10-01 19:48 UTCEPSS rescore
  10. 2026-09-30 15:02 UTCEPSS rescore
  11. 2026-09-30 15:02 UTCEPSS rescore
  12. 2026-09-28 13:50 UTCEPSS rescore
  13. 2026-09-26 15:58 UTCEPSS rescore
  14. 2026-09-26 15:58 UTCEPSS rescore
  15. 2026-09-26 00:24 UTCEPSS rescore
  16. 2026-09-24 14:02 UTCEPSS rescore
  17. 2026-09-23 13:46 UTCEPSS rescore
  18. 2026-09-22 14:47 UTCEPSS rescore
  19. 2026-09-18 19:27 UTCEPSS rescore
  20. 2026-09-16 14:06 UTCEPSS rescore
  21. 2026-09-16 05:13 UTCEPSS rescore
  22. 2026-09-15 03:09 UTCEPSS rescore
  23. 2026-09-12 15:00 UTCEPSS rescore
  24. 2026-09-11 14:51 UTCEPSS rescore
  25. 2026-09-11 09:35 UTCEPSS rescore
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  1. 2026-09-10 09:33 UTCEPSS rescore
  2. 2026-09-08 21:59 UTCEPSS rescore
  3. 2026-09-07 16:00 UTCEPSS rescore
  4. 2026-09-06 13:46 UTCEPSS rescore
  5. 2026-09-06 13:46 UTCEPSS rescore
  6. 2026-09-05 15:28 UTCEPSS rescore
  7. 2026-09-04 05:05 UTCEPSS rescore
  8. 2026-09-02 14:11 UTCEPSS rescore
  9. 2026-09-01 13:52 UTCEPSS rescore
  10. 2026-09-01 04:38 UTCEPSS rescore
  11. 2026-08-30 19:16 UTCEPSS rescore
  12. 2026-08-30 01:21 UTCEPSS rescore
  13. 2026-08-28 21:40 UTCEPSS rescore
  14. 2026-08-27 14:24 UTCEPSS rescore
  15. 2026-08-25 13:47 UTCEPSS rescore
  16. 2026-08-23 00:18 UTCEPSS rescore
  17. 2026-08-21 23:48 UTCEPSS rescore
  18. 2026-08-20 22:54 UTCEPSS rescore
  19. 2026-08-19 17:03 UTCEPSS rescore
  20. 2026-08-18 13:47 UTCEPSS rescore
  21. 2026-08-17 13:46 UTCEPSS rescore
  22. 2026-08-16 14:55 UTCEPSS rescore
  23. 2026-08-16 02:13 UTCEPSS rescore
  24. 2026-08-16 02:13 UTCEPSS rescore
  25. 2026-08-15 01:29 UTCEPSS rescore
  26. 2026-08-13 21:59 UTCEPSS rescore
  27. 2026-08-12 13:50 UTCEPSS rescore
  28. 2026-08-10 23:59 UTCEPSS rescore
  29. 2026-08-10 15:35 UTCEG score recompute
  30. 2026-08-10 15:35 UTCGHSA enrichment
  31. 2026-08-07 16:26 UTCEPSS rescore
  32. 2026-08-06 13:46 UTCEPSS rescore
  33. 2026-08-05 19:16 UTCEPSS rescore
  34. 2026-08-04 15:09 UTCEPSS rescore
  35. 2026-08-04 10:37 UTCEPSS rescore
  36. 2026-08-03 10:35 UTCEPSS rescore
  37. 2026-08-02 02:25 UTCEPSS rescore
  38. 2026-08-01 04:15 UTCEPSS rescore
  39. 2026-07-30 16:27 UTCEPSS rescore
  40. 2026-07-30 01:29 UTCEPSS rescore
  41. 2026-07-28 15:35 UTCEPSS rescore
  42. 2026-07-27 14:12 UTCEPSS rescore
  43. 2026-07-26 14:53 UTCEPSS rescore
  44. 2026-07-25 14:17 UTCEPSS rescore
  45. 2026-07-24 14:17 UTCEPSS rescore
  46. 2026-07-23 14:17 UTCEPSS rescore
  47. 2026-07-23 02:52 UTCEG score recompute▲ 0.70
  48. 2026-07-22 14:07 UTCEPSS rescore
  49. 2026-07-22 14:07 UTCEPSS rescore
  50. 2026-07-21 15:24 UTCEPSS rescore
  51. 2026-07-20 17:07 UTCEPSS rescore
  52. 2026-07-19 14:30 UTCEPSS rescore
  53. 2026-07-19 14:30 UTCEPSS rescore
  54. 2026-07-19 02:28 UTCEPSS rescore
  55. 2026-07-19 02:28 UTCEPSS rescore
  56. 2026-07-18 10:03 UTCEPSS rescore
  57. 2026-07-16 17:02 UTCEPSS rescore
  58. 2026-07-15 16:57 UTCEPSS rescore
  59. 2026-07-15 16:57 UTCEPSS rescore
  60. 2026-07-15 01:59 UTCEPSS rescore
  61. 2026-07-13 22:29 UTCEPSS rescore
  62. 2026-07-13 22:29 UTCEPSS rescore
  63. 2026-07-13 06:12 UTCEPSS rescore
  64. 2026-07-13 06:12 UTCEPSS rescore
  65. 2026-07-12 05:46 UTCEPSS rescore
  66. 2026-07-12 05:46 UTCEPSS rescore
  67. 2026-07-11 08:27 UTCEPSS rescore
  68. 2026-07-11 08:26 UTCEPSS rescore
  69. 2026-07-09 19:09 UTCEPSS rescore
  70. 2026-07-08 15:14 UTCEPSS rescore
  71. 2026-07-07 13:45 UTCEPSS rescore
  72. 2026-07-06 16:26 UTCEPSS rescore
  73. 2026-07-06 02:22 UTCEPSS rescore
  74. 2026-07-06 02:22 UTCEPSS rescore
  75. 2026-07-05 02:30 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-26647?
CVE-2025-26647 is a high vulnerability published on April 8, 2025. Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
When was CVE-2025-26647 disclosed?
CVE-2025-26647 was first published on April 8, 2025, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-26647 actively exploited?
CVE-2025-26647 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% probability of exploitation in the next 30 days (82nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-26647?
CVE-2025-26647 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2025-26647?
A fix for CVE-2025-26647 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2025-26647 are linked in the Vendor Advisories panel on this page.

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