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Vulnerability Intelligence

CVE-2024-30040

HighExploitedPublic exploit

Windows MSHTML Platform Security Feature Bypass Vulnerability

Published May 15, 2024 · Updated Oct 7, 2026

Key Facts

Patch immediately
  • CVE-2024-30040 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 10 1809 (Microsoft) and 22 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 14, 2024. Public exploit code is available.
  • EPSS estimates a 3.9% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Windows 10 1507 10.0.10240.20651, Windows 10 1607 10.0.14393.6981, Windows 10 1809 10.0.17763.5820.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

3.9%

Higher than 90.2% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2024-30040 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Windows MSHTML Platform Security Feature Bypass Vulnerability

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVMay 14, 2024Jun 4, 2024Not reported
Industry KEV feedMay 14, 2024Jun 4, 2024Not reported
CIRCL KEVMay 14, 2024Jun 4, 2024Not reported
ENISA EUVDMay 14, 2024n/aNot reported

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Products

38 affected entries in total
ProductAffected versionsFixed in
Windows 10 1507MicrosoftSee advisory10.0.10240.20651
Windows 10 1607MicrosoftSee advisory10.0.14393.6981
Windows 10 1809MicrosoftSee advisory10.0.17763.5820
windows 10 21H2MicrosoftSee advisory10.0.19044.4412
windows 10 22H2MicrosoftSee advisory10.0.19045.4412
20 more affected products in the full CVE brief

Patched Releases

Windows 10 1507

10.0.10240.20651

Windows 10 1607

10.0.14393.6981

Windows 10 1809

10.0.17763.5820

windows 10 21H2

10.0.19044.4412

windows 10 22H2

10.0.19045.4412

windows 11 21H2

10.0.22000.2960

windows 11 22H2

10.0.22621.3593

windows 11 23H2

10.0.22631.3593

Windows Server 2016

10.0.14393.6981

Windows Server 2019

10.0.17763.5820

Windows Server 2022

10.0.20348.2458, 10.0.20348.2461

Windows Server 2022 23h2

10.0.25398.887

Windows Server 23h2

10.0.25398.887

Windows 10 Version 1507

10.0.10240.20651

Windows 10 Version 1607

10.0.14393.6981

Windows 10 Version 1809

10.0.17763.5820

Windows 10 Version 21H2

10.0.19044.4412

Windows 10 Version 22H2

10.0.19045.4412

Windows 11 version 21H2

10.0.22000.2960

Windows 11 version 22H2

10.0.22621.3593

Windows 11 version 22H3

10.0.22631.3593

Windows 11 Version 23H2

10.0.22631.3593

Windows Server 2016 (Server Core installation)

10.0.14393.6981

Windows Server 2019 (Server Core installation)

10.0.17763.5820

Windows Server 2022, 23H2 Edition (Server Core installation)

10.0.25398.887

Timeline

  1. Added to CISA KEV

    May 14, 2024

  2. Added to Industry KEV feed

    May 14, 2024

  3. Added to CIRCL KEV

    May 14, 2024

  4. Added to ENISA EUVD

    May 14, 2024

  5. Publicly disclosed

    May 15, 2024

  6. Last updated

    Oct 7, 2026

Weakness Type

  • CWE-20 Improper Input Validation

References

15 more references in the full CVE brief

FAQ

Common Questions.

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