Untrusted Pointer Dereference in Microsoft Windows and Windows Server - CVE-2026-83498
Published: September 9, 2026
Vulnerability identifier: #VU148309
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-83498
CWE-ID: CWE-822
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to elevate privileges.
The vulnerability exists due to untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave when dereferencing an untrusted pointer. A local user can exploit the untrusted pointer dereference to elevate privileges.
Successful exploitation could leak data from the target enclave or execute code in the context of the target enclave.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-83498
Install security update from vendor's website.
Microsoft Windows - addressed in versions 11 23H2 10.0.22631.7582, 11 24H2 10.0.26100.9445, 11 25H2 10.0.26200.9445, 11 26H1 10.0.28000.2954
Windows Server - update to 2025 10.0.26100.33438
Windows Server - update to 2025 10.0.26100.33438