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CVE-2024-29988: Microsoft SmartScreen Prompt Security Feature Bypass Vulnerability

criticalknown exploitedpublic exploitCVE-2024-29988
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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

vendor: Microsoftproduct: SmartScreen PromptOther
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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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-04-30
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-29988

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2024-29988coverage & exploitation statusNVD · CVE.org

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