CVE-2024-29988: Microsoft SmartScreen Prompt Security Feature Bypass Vulnerability
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.
| Vendor | Microsoft |
|---|---|
| Product | SmartScreen Prompt |
| Date added to KEV | 2024-04-30 |
| Due date (BOD 22-01) | 2024-05-21 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-693 |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
What to do
- Identify every instance of Microsoft SmartScreen Prompt in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Federal civilian agencies must act by 2024-05-21 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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