Microsoft SmartScreen Prompt Security Feature Bypass Vulnerability (CVE-2024-29988)
Severity: high · Patch status: patched · Since 2024-04-30 · CVE-2024-29988
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. CISA added CVE-2024-29988 to its Known Exploited Vulnerabilities catalog on Apr 30, 2024, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by May 21, 2024 (BOD 22-01); treat that as the outer limit.
Sources
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