CVE-2024-30040

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-05-14), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 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: 4%CVSS: 8.8Exploit: cisa kev · ssvc activeExposed: 0

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

Windows MSHTML Platform Security Feature Bypass Vulnerability

CVSS v3
8.8
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
4%
EPSS %ILE
90%
KEV
⚠ Exploited

Published

May 14, 2024

Last Modified

October 28, 2025

Advisory Details (2)

Auto-updated Jun 1, 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-2024-30040
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-2024-30040

Weakness Classification(2)

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 94× in last 7d / 385× 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 1,396 total refreshes for this CVE.

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

Frequently asked(6)

What is CVE-2024-30040?
CVE-2024-30040 is a critical vulnerability published on May 14, 2024. Windows MSHTML Platform Security Feature Bypass Vulnerability
When was CVE-2024-30040 disclosed?
CVE-2024-30040 was first published in the National Vulnerability Database on May 14, 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-2024-30040 actively exploited?
Yes. CISA added CVE-2024-30040 to the Known Exploited Vulnerabilities catalog on May 14, 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-2024-30040?
CVE-2024-30040 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2024-30040?
CVE-2024-30040 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-2024-30040?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-30040, 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

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