CVE-2022-24521

CRITICALNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-04-13), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 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: 7%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomwareExposed: 0

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

Windows Common Log File System Driver Elevation of Privilege Vulnerability

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
7%
EPSS %ILE
94%
KEV
⚠ Exploited

Published

April 15, 2022

Last Modified

October 30, 2025

Advisory Details (2)

Auto-updated Jun 4, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
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-2022-24521
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-2022-24521

Weakness Classification(1)

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

All Vendor Advisories

(1)

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 90× in last 7d / 390× 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 1,490 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2022-24521?
CVE-2022-24521 is a critical vulnerability published on April 15, 2022. Windows Common Log File System Driver Elevation of Privilege Vulnerability
When was CVE-2022-24521 disclosed?
CVE-2022-24521 was first published in the National Vulnerability Database on April 15, 2022, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-24521 actively exploited?
Yes. CISA added CVE-2022-24521 to the Known Exploited Vulnerabilities catalog on April 13, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2022-24521?
CVE-2022-24521 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2022-24521?
CVE-2022-24521 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2022-24521?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-24521, 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-2022-24521

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