CVE-2024-21351
CISA KEVPublished February 13, 2024 · Updated April 3, 2026
high
Official Description+
Microsoft Windows SmartScreen contains a security feature bypass vulnerability that allows an attacker to bypass the SmartScreen user experience and inject code to potentially gain code execution, which could lead to some data exposure, lack of system availability, or both.
Affected Products
| Vendor | Product |
|---|---|
| Microsoft | Windows |
Patch Status
Patch by 2024-03-05
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2024-21351.