CVE Catalog

CVE-2026-20809

HighCVSS 7.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.36%

29th percentile - higher than 29% of all known CVEs

Summary

A time-of-check time-of-use (TOCTOU) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.

Risk Assessment

An attacker could gain elevated privileges, potentially leading to system takeover.

Recommendation

Install the latest security updates from Microsoft for the Windows kernel.

Related vulnerabilities

Original NVD description (English source)

Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS