CVE-2026-83761

7.8High

Published 13 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash

7.8High

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-416

Impact

A local attacker with an existing account can execute arbitrary code with elevated kernel privileges. They need valid local credentials or code execution on the target host to trigger it.

Root cause

A use-after-free bug in the Windows Win32 Kernel Subsystem mishandles memory references during local operations.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Install the Microsoft security update for this CVE once released via Windows Update or WSUS; no interim workaround is documented.

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

Ad · In-content banner

NVD description

Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83761

Source: nvd.nist.gov/vuln/detail/CVE-2026-83761