Information Disclosure Vulnerability in Windows Virtualization-Based Security by Microsoft
CVE-2026-83501

5.5MEDIUM

Key Information:

Vendor

Microsoft
Status
Windows 11 Version 23h2
Windows 11 Version 23h2
Windows 11 Version 24h2
Windows 11 Version 25h2
Vendor
CVE Published:
8 September 2026

What is CVE-2026-83501?

An out-of-bounds read vulnerability in Windows Virtualization-Based Security (VBS) Enclave can allow an authorized attacker to expose sensitive information locally. This flaw could compromise the confidentiality of data processed within secure enclaves, heightening the risk of unauthorized access to critical system information. It is essential for users and administrators to apply the latest security updates to mitigate this risk.

Affected Version(s)

Windows 11 version 23H2 ARM64-based Systems 10.0.22631.0 < 10.0.22631.7582

Windows 11 Version 23H2 x64-based Systems 10.0.22631.0 < 10.0.22631.7582

Windows 11 Version 24H2 ARM64-based Systems 10.0.26100.0 < 10.0.26100.9445

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.