CVE-2023-36424

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 2026-04-13), 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: 12%CVSS: 7.8Exploit: cisa kev · ssvc active · epss top5pct · public exploitExposed: 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
12%
EPSS %ILE
96%
KEV
⚠ Exploited

Published

November 14, 2023

Last Modified

April 14, 2026

Advisory Details (2)

Auto-updated May 19, 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-2023-36424
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-2023-36424

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 99× in last 7d / 397× 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 1,063 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCzerozenxlabs/CVE-2023-36424
    First seen Mar 21, 2024

    Windows Kernel Pool (clfs.sys) Corruption Privilege Escalation

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2023-36424?
CVE-2023-36424 is a critical vulnerability published on November 14, 2023. Windows Common Log File System Driver Elevation of Privilege Vulnerability
When was CVE-2023-36424 disclosed?
CVE-2023-36424 was first published in the National Vulnerability Database on November 14, 2023, with the most recent update on April 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-36424 actively exploited?
Yes. CISA added CVE-2023-36424 to the Known Exploited Vulnerabilities catalog on April 13, 2026, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-36424?
CVE-2023-36424 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-2023-36424?
CVE-2023-36424 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-2023-36424?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36424, 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-2023-36424

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