Microsoft SmartScreen Prompt Security Feature Bypass Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-04-30
• EPSS: 45% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

SmartScreen Prompt Security Feature Bypass Vulnerability

CISA: Microsoft SmartScreen Prompt contains a security feature bypass vulnerability that allows an attacker to bypass the Mark of the Web (MotW) feature. This vulnerability can be chained with CVE-2023-38831 and CVE-2024-21412 to execute a malicious file.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 21 May 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-2024-29988PatchVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource