PT-2026-58436 · Microsoft · Windows Kernel+1

CVE-2026-50459 · Published 2026-07-14 · Updated 2026-07-21

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 Kernel (affected versions not specified)

Description A use after free issue in the Windows Kernel allows an unauthorized local attacker to elevate privileges. Use after free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed, which can be exploited to execute arbitrary code or gain higher system permissions.

Recommendations Install update KB5101650.

Fix

LPE

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-10349

CVE-2026-50459

Affected Products

Windows

Windows Kernel

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50459 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50459 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-10349 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-50459 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50459 · Vendor Advisory
• https://t.me/cveNotify/209158 · Telegram Post
• https://twitter.com/windowsforum/status/2077357796996112870 · Twitter Post