PT-2026-58274 · Microsoft · Windows Server 2025+1

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-58602

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/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 issue in the Windows Kernel Mode Driver allows an authorized attacker to elevate privileges locally, potentially granting full control of the system. Use after free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed.

Recommendations Update Windows 11 to the latest patched version. Update Windows Server 2025 to the latest patched version.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-58602

Affected Products

Windows 11

Windows Server 2025

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-58602 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58602 · Vendor Advisory
• https://twitter.com/windowsforum/status/2077207558259966319 · Twitter Post