CVE-2026-83939: Windows Secure Kernel Mode Elevation of Privilege Vulnerability
Untrusted pointer dereference in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Other sources
Windows Secure Kernel Mode Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2954Patch KB5124012
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized on the affected Windows 11 system and have local access. The vulnerability is therefore most relevant after an attacker has obtained an account or code execution with existing privileges.
What level of impact could successful exploitation have?
Successful exploitation can elevate privileges in Windows Secure Kernel Mode. The supplied vector indicates high impacts to confidentiality, integrity, and availability, and that the security scope can change.
Is remote exploitation indicated?
No. The supplied attack vector is local, so the data does not indicate exploitation directly over the network.
Does exploitation require user interaction?
No user interaction is required according to the supplied vector. However, the attacker must have high privileges before exploiting the issue.