CVE-2024-29988
Actively exploited. CVE-2024-29988 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-04-30) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2024-29988 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
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.
CSIRTS triage
- What
- The vulnerability allows an attacker to bypass the Mark of the Web feature.
- Who is affected
- Deployments of Microsoft SmartScreen Prompt are affected.
- Urgency
- Remediation is urgent as the vulnerability is actively exploited and has critical severity.
- Action
- Apply the latest security updates to mitigate the vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2024-29988 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2024-29988: Microsoft SmartScreen Prompt Security Feature Bypass Vulnerabilitycisa-kev · 2024-04-30
External references
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[](https://www.csirts.com/cve/CVE-2024-29988)