HIGH Published October 13, 2026

CVE-2026-83721

Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVSS base score
7.8 (v3.1)
Severity
HIGH
Attack vector
Local
Weakness
CWE-416
Last modified
October 29, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

microsoft windows 11 24h2 microsoft windows 11 25h2 microsoft windows 11 26h1 microsoft windows 11 26h2 microsoft windows server 2025

References

View full NVD advisory →

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