CVE-2024-49138

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 2024-12-10), 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: 26%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
26%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

December 12, 2024

Last Modified

October 28, 2025

Advisory Details (4)

Auto-updated Jun 3, 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-2024-49138
generic🟡 PoC Available

Microsoft Windows 11 23h2 - CLFS.sys Elevation of Privilege - Windows local Exploit

https://www.exploit-db.com/exploits/52270
generic

Packet Storm

https://packetstorm.news/files/id/190585/
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-2024-49138

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 97× in last 7d / 404× 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 1,425 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-52270
    First seen Apr 22, 2025

    Microsoft Windows 11 23h2 - CLFS.sys Elevation of Privilege

    Open source ↗
  • GitHub PoCMrAle98/CVE-2024-49138-POC
    First seen Jan 15, 2025

    POC exploit for CVE-2024-49138

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2024-49138?
CVE-2024-49138 is a critical vulnerability published on December 12, 2024. Windows Common Log File System Driver Elevation of Privilege Vulnerability
When was CVE-2024-49138 disclosed?
CVE-2024-49138 was first published in the National Vulnerability Database on December 12, 2024, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-49138 actively exploited?
Yes. CISA added CVE-2024-49138 to the Known Exploited Vulnerabilities catalog on December 10, 2024, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2024-49138?
CVE-2024-49138 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-2024-49138?
CVE-2024-49138 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-2024-49138?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-49138, 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-2024-49138

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