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OpenAdvisories
High MSRC-CVE-2026-56176 1 CVE

Windows Win32k Elevation of Privilege Vulnerability

Published Jul 14, 2026 · Updated Sep 17, 2026 · Revision 2

Vendor: Microsoft

Summary

Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Security updates
10.0.17763.9020 — https://support.microsoft.com/help/5099538
10.0.20348.5386 — https://support.microsoft.com/help/5099540
10.0.19044.7548 — https://support.microsoft.com/help/5099539
10.0.26100.33158 — https://support.microsoft.com/help/5099536
10.0.26200.8875 — https://support.microsoft.com/help/5101650
10.0.28000.2525 — https://support.microsoft.com/help/5101649
10.0.14393.9339 — https://support.microsoft.com/help/5099535
6.2.9200.26226 — https://support.microsoft.com/help/5099445
6.3.9600.23291 — https://support.microsoft.com/help/5099444
16.111.26071215 — https://go.microsoft.com/fwlink/p/?linkid=831049
16.0.20228.20042 — https://support.google.com/googleplay/answer/113412?hl=en
16.111.26071215 — https://www.microsoft.com/en-us/microsoft-365/mac/microsoft-365-for-mac?msockid=35f9adb0e74b61392038b90de6fe608c

Vulnerabilities 1

Revision history

  1. #2

    Added Office software to the Security Updates table. Customers that are running supported version of Office are encouraged to update to the indicated version to be protected from this vulnerability.

  2. #1

    Information published.

References