CVE-2023-29336

HIGH7.8

CISA KEV

Published 2023-05-09 · Updated 2026-06-17 · Source secure@microsoft.com

Summary

CVE-2023-29336 is a high-severity (CVSS 7.8) vulnerability in Microsoft Win32k. CISA added it to the Known Exploited Vulnerabilities catalog on May 9, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 30, 2023. 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

Win32k Elevation of Privilege Vulnerability

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

CWE-416CWE-416

CISA Known-Exploited Vulnerability

Product: Microsoft — Win32k

Name: Microsoft Win32K Privilege Escalation Vulnerability

Date added: 2023-05-09 · Due: 2023-05-30

Required action: Apply updates per vendor instructions.

References

View on NVD

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