PT-2026-32741 · Microsoft · Windows Kernel+1

Samer Karim · CVE-2026-26163 · Published 2026-04-14 · Updated 2026-04-25

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 double free issue in the Windows Kernel allows an authorized attacker to elevate privileges locally, which can affect the system. A double free occurs when a program attempts to free the same memory location twice, potentially leading to memory corruption.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

BDU:2026-05364

CVE-2026-26163

Affected Products

Windows

Windows Kernel

References · 7

• https://bdu.fstec.ru/vul/2026-05364 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26163 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26163 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-26163 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-26163 · Security Note
• https://twitter.com/CVEnew/status/2044358620960137695 · Twitter Post
• https://twitter.com/giuseppe_1337/status/2047839325480473054 · Twitter Post