CVE-2026-69779: Windows Win32k Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attacker to elevate privileges locally.
Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69779
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-69779 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for Windows Win32k Elevation
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-70283: Incorrect authorization in Windows Win32K allows an authorized attacker to elevate privileges …nvd · 2026-09-08
- highCVE-2026-69844: Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges local…nvd · 2026-09-08
- highCVE-2026-69818: Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.nvd · 2026-09-08
- highCVE-2026-69779: Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attac…nvd · 2026-09-08
- highCVE-2026-69762: Stack-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privile…nvd · 2026-09-08
- highCVE-2026-69706: Use after free in Windows Win32K allows an authorized attacker to elevate privileges over a ne…nvd · 2026-09-08
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