CVE-2026-83757

high

Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVSS

7.8

7.8 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (secure@microsoft.com)

Timeline (UTC)

Published: 2026-10-13 19:20

Modified: 2026-10-13 21:18

NVD status: Undergoing Analysis

Last synced 1 day ago

Verified against the source API 2026-10-27 07:00 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

No vendor advisory or patch reference tagged by NVD. Check the references below.

NVD CVE API 2.0 — fetched 2026-10-27 07:00 UTC · record ↗