PT-2026-58329 · Microsoft · Windows 11 Version 24H2+3

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-50340

NVD

CVSS v3.1

8.5

High

Base vector

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

Use after free in Windows Runtime allows an authorized attacker to elevate privileges over a network.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-50340

Affected Products

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2025

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50340 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-50340 · Security Note