CVE-2024-30040

HIGH8.8

CISA KEV

Published 2024-05-14 · Updated 2026-06-17 · Source secure@microsoft.com

Summary

CVE-2024-30040 is a high-severity (CVSS 8.8) vulnerability in Microsoft Windows. CISA added it to the Known Exploited Vulnerabilities catalog on May 14, 2024, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 4, 2024. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

All 390 known-exploited Microsoft vulnerabilities →

Description

Windows MSHTML Platform Security Feature Bypass Vulnerability

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

CWE-20

CISA Known-Exploited Vulnerability

Product: Microsoft — Windows

Name: Microsoft Windows MSHTML Platform Security Feature Bypass Vulnerability

Date added: 2024-05-14 · Due: 2024-06-04

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

References

View on NVD

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