Out-of-bounds Read in Microsoft Windows 11 Version 23h2

CVE-2026-83501

Out-of-bounds read in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-83501?
CVE-2026-83501 is a medium-severity vulnerability in Microsoft Windows 11 Version 23h2, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-09-08.
How severe is CVE-2026-83501?
Medium severity. CVSS v3 base score is 5.5 out of 10.