CVE-2023-24880
Actively exploited. CVE-2023-24880 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-03-14) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Microsoft Windows SmartScreen contains a security feature bypass vulnerability that could allow an attacker to evade Mark of the Web (MOTW) defenses via a specially crafted malicious file.
CSIRTS triage
- What
- Microsoft Windows SmartScreen contains a security feature bypass vulnerability that could allow an attacker to evade Mark of the Web defenses.
- Who is affected
- Users of Microsoft Windows with SmartScreen enabled.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Update Windows to the latest version to mitigate this 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 100% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2023-24880: Microsoft Windows SmartScreen Security Feature Bypass Vulnerabilitycisa-kev · 2023-03-14
External references
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