CVE-2026-83939 – Windows Secure Kernel Mode Elevation of Privilege Vulnerability
CVSS 8.2
IMPORTANT
Critical - Same Day Deployment
"A successful attack can cross a critical Windows security boundary and give an attacker powerful VTL1 privileges."
CVE-2026-83939 is a Critical elevation-of-privilege vulnerability in Windows Secure Kernel Mode caused by an untrusted pointer dereference. An authorized attacker who already has kernel-level access can submit a specially crafted Code Integrity policy to an affected system. Successful exploitation can allow code execution in Virtual Trust Level 1 (VTL1), with high potential impact to confidentiality, integrity, and availability.
Key Details
- Attack Vector
- Local
- Attack Complexity
- Low
- Privileges Required
- High
- User Interaction
- None
- CWE Classification
- CWE-822
Patch this CVE on all your endpoints in under 5 minutes.
First 200 endpoints are free forever, scale as needed.