PT-2026-58602 · Microsoft · Windows 10 Version 21H2+6

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-56184

Mitre

CVSS v3.1

5.5

Medium

Base vector

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

Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-56184

Affected Products

Windows 10 Version 21H2

Windows 10 Version 22H2

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2022

Windows Server 2025

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-56184 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56184 · Vendor Advisory