CVE-2022-21882: Microsoft Win32k Privilege Escalation Vulnerability
CVE-2022-21882 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-02-04
A privilege escalation vulnerability exists in the Microsoft Win32k kernel driver due to an out-of-bounds write (CWE-787) or offset confusion in ConsoleControl. An attacker with local access can exploit this to gain elevated system privileges.
Yes. CVE-2022-21882 is known to be exploited in the wild, first recorded on 4 February 2022. Treat it as urgent.
How severe is CVE-2022-21882?
Critical severity, with a CVSS score of 7.8, published 4 February 2022.
Which products and versions are affected?
Microsoft Windows 10 1809, 1909, 20H2, 21H1, 21H2; Microsoft Windows 11 21H2; Microsoft Windows Server 2019; Microsoft Windows Server 2022; and 1 more.
Is there a fix for CVE-2022-21882?
A patch was published on 2022-02-04: Microsoft released security updates to address this vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2022-21882 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2022-21882?
Check whether you run Microsoft Win32K. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Microsoft Windows 10 1809, 1909, 20H2, 21H1, 21H2
Microsoft Windows 11 21H2
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows Server 20H2
Timeline
2022-02-04: disclosed
2022-02-04: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2022-02-04: patched: Microsoft released security updates to address this vulnerability.
2022-02-04: exploited: Reported as exploited in the wild.