CVE-2026-85836: 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 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - 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 10.0.28000.3231Patch KB5127646
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized on an affected Windows 11 or Windows Server 2025 system and able to execute an attack locally. The vulnerability is not described as remotely exploitable.
What access could an attacker gain?
Successful exploitation can elevate the attacker's privileges on the local system. The supplied severity vector indicates high impact to confidentiality, integrity, and availability.
How can I determine whether systems are potentially affected?
Review systems running Microsoft Windows 11 or Microsoft Windows Server 2025. The provided data does not identify specific affected builds, update levels, or configuration conditions.