PT-2026-7336 · Microsoft · Windows Kernel+1

Dreamy · Published 2026-02-10 · Updated 2026-03-10 · CVE-2026-21231

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Kernel (affected versions not specified)

Description A flaw exists in the Windows Kernel related to concurrent execution using a shared resource with improper synchronization, creating a race condition. This can allow an authorized attacker to elevate privileges locally.

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

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

BDU:2026-01800

CVE-2026-21231

Affected Products

Windows

Windows Kernel

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-21231 · Security Note
• https://bdu.fstec.ru/vul/2026-01800 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21231 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21231 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21231 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-21231 · Vendor Advisory
• https://t.me/avleonovcom/1631 · Telegram Post
• https://t.me/cveNotify/151777 · Telegram Post