What is CVE-2026-83771?

CVE-2026-83771 is a high-severity vulnerability in Microsoft Windows 11 Version 23h2, classified under Use After Free. CVSS score: 8.8/10. Published 2026-10-13.

How severe is CVE-2026-83771?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Microsoft Windows 11 Version 23h2

CVE-2026-83771

Use after free in Windows Camera Frame Server Monitor allows an unauthorized attacker to elevate privileges over an adjacent network.

Vulnerability class: Use-After-Free

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-416 — Use After Free

References

Windows Camera Frame Server Monitor Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-83771?: CVE-2026-83771 is a high-severity vulnerability in Microsoft Windows 11 Version 23h2, classified under Use After Free. CVSS score: 8.8/10. Published 2026-10-13.
How severe is CVE-2026-83771?: High severity. CVSS v3 base score is 8.8 out of 10.