CVE-2026-70243: Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Other sources
Windows Kernel 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 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653
Event History
Frequently Asked Questions
Which systems are identified as affected?
The affected software listed is Microsoft Windows 11 and Microsoft Windows Server 2025.
What access does an attacker need to exploit this issue?
An attacker must already be authorized on the target system and exploit the flaw locally. The available data does not indicate that remote access or user interaction is required.
What is the potential impact of successful exploitation?
Successful exploitation can allow local elevation of privilege. The supplied severity vector indicates high impacts to confidentiality, integrity, and availability.