CVE-2021-26863: Windows Win32k Elevation of Privilege Vulnerability
Windows Win32k Elevation of Privilege Vulnerability
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 10.0.19043.867Patch KB5000802 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.1817Patch KB5000822 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.18363.1440Patch KB5000808 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17134.2087Patch KB5000809
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
The affected software listed is Microsoft Windows 10, Windows Server 2016, and Windows Server 2019. Exploitation is local, so systems are exposed when an attacker can execute code locally with an existing low-privileged account or process.
What access and conditions does an attacker need?
The CVSS vector indicates local access, low privileges, and no user interaction are required. Exploitation has high attack complexity, and successful exploitation can affect confidentiality, integrity, and availability.