CVE-2021-40450
Actively exploited. CVE-2021-40450 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-25) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Microsoft Win32k contains an unspecified vulnerability that allows for privilege escalation.
CSIRTS triage
- What
- An unspecified vulnerability allows for privilege escalation.
- Who is affected
- Users of Microsoft Windows with the affected Win32k component.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Install the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 78% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2021-40450: Microsoft Win32k Privilege Escalation Vulnerabilitycisa-kev · 2022-04-25
External references
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