ClosedPatched

Microsoft SmartScreen Prompt Security Feature Bypass

Microsoft SmartScreen Prompt

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. Added to the CISA KEV catalog on 2024-04-30.

Why this severity: CVSS 8.8 (v3.1, CNA), actively exploited (CISA KEV)

Started: Apr 9, 2024
Closed: Apr 30, 2024
CVE: CVE-2024-29988

Follow this incident

Updated Apr 30, 2024

Affected

See vendor advisory (versions are not listed in the KEV record)

Fixed in

See vendor advisory linked in sources

Timeline2

Apr 30, 2024
CISA added CVE-2024-29988 to the KEV catalog (federal deadline 2024-05-21)
Source
Apr 9, 2024
CVE-2024-29988 published
Source

Advisories3

Notes & caveats

Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).

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