PT-2026-58375 · Microsoft · Windows Server 2025+1

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-50396

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows 11 (affected versions not specified) Windows Server 2025 (affected versions not specified)

Description A use after free flaw in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally, enabling a user with local access to obtain administrative permissions. Use after free is a memory corruption issue that occurs when an application continues to use a pointer after it has been freed.

Recommendations Install the July updates for Windows 11. Install the July updates for Windows Server 2025.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-50396

Affected Products

Windows 11

Windows Server 2025

References · 3

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50396 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-50396 · Security Note
• https://twitter.com/windowsforum/status/2077271731908043192 · Twitter Post