Microsoft Windows SmartScreen Security Feature Bypass Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-02-13
• EPSS: 28% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

Windows SmartScreen Security Feature Bypass Vulnerability

CISA: 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 5 Mar 2024): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

• Patch on msrc.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21351PatchVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource