How to check if you are exposed to CVE-2022-21882
- Find every Microsoft Win32k system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2022-21882.
US federal agencies had to fix this by 2022-02-18. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Timeline
- · Added to CISA's Known Exploited Vulnerabilities catalog
- · Fix-by date for US federal agencies, passed 1,717 days ago
Weakness type
More exploited Microsoft vulnerabilities
CISA lists 390 exploited Microsoft vulnerabilities. The closest matches:
- CVE-2016-0165Microsoft Win32k Privilege Escalation VulnerabilityAdded 2023-06-22
- CVE-2023-29336Microsoft Win32K Privilege Escalation VulnerabilityAdded 2023-05-09
- CVE-2015-2360Microsoft Win32k Privilege Escalation VulnerabilityAdded 2022-05-25
- CVE-2018-8589Microsoft Win32k Privilege Escalation VulnerabilityAdded 2022-05-23
- CVE-2014-4113Microsoft Win32k Privilege Escalation VulnerabilityAdded 2022-05-04
- CVE-2021-41357Microsoft Win32k Privilege Escalation VulnerabilityAdded 2022-04-25
- CVE-2021-40450Microsoft Win32k Privilege Escalation VulnerabilityAdded 2022-04-25
- CVE-2013-3660Microsoft Win32k Privilege Escalation VulnerabilityAdded 2022-03-28
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.