CVE-2025-24991

CRITICALNVD 5.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-03-11), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 5.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 2.0%CVSS: 5.5Exploit: cisa kev · ssvc activeExposed services: Not assessed

A fix is available — apply it.

Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.

CVSS v3
5.5
EG Score
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA 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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.0%
EPSS %ILE
79th
KEV
⚠ Exploited

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

March 11, 2025

Last Modified

October 27, 2025

Advisory Details (2)

Auto-updated Jun 13, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa, microsoft.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24991
microsoft Patch Available

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-2025-24991

Vendor Advisories for CVE-2025-24991(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 100× in last 7d / 411× 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 1,607 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2025-24991?
CVE-2025-24991 is a critical vulnerability published on March 11, 2025. Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.
When was CVE-2025-24991 disclosed?
CVE-2025-24991 was first published on March 11, 2025, with the most recent update on October 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-24991 actively exploited?
Yes. CISA added CVE-2025-24991 to the Known Exploited Vulnerabilities catalog on March 11, 2025, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2025-24991?
CVE-2025-24991 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2025-24991?
CVE-2025-24991 affects Microsoft Windows.
How do I remediate CVE-2025-24991?
A fix for CVE-2025-24991 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-24991 are linked in the Vendor Advisories panel on this page.

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