PT-2026-58670 · Microsoft · Windows 11 Version 26H1

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-58633

Mitre

CVSS v3.1

7.8

High

Base vector

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

Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-58633

Affected Products

Windows 11 Version 26H1

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58633 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-58633 · Security Note