Sep 2026: Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability
CVE-2026-83501 Published on September 8, 2026
Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability
Out-of-bounds read in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.
Weakness Type
Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Products Associated with CVE-2026-83501
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Affected Versions
Microsoft Windows 11 version 23H2:- Version 10.0.22631.0 and below 10.0.22631.7582 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7582 is affected.
- Version 10.0.26100.0 and below 10.0.26100.9445 is affected.
- Version 10.0.26200.0 and below 10.0.26200.9445 is affected.
- Version 10.0.28000.0 and below 10.0.28000.2954 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33438 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33438 is affected.