CVE-2024-38217
Actively exploited. CVE-2024-38217 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-09-10) — 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 Mark of the Web (MOTW) contains a protection mechanism failure vulnerability that allows an attacker to bypass MOTW-based defenses. This can result in a limited loss of integrity and availability of security features such as Protected View in Microsoft Office, which rely on MOTW tagging.
CSIRTS triage
- What
- Microsoft Windows Mark of the Web (MOTW) contains a protection mechanism failure vulnerability that allows an attacker to bypass MOTW-based defenses.
- Who is affected
- All deployments of Microsoft Windows with MOTW are affected.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest security updates for Microsoft Windows.
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 95% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2024-38217: Microsoft Windows Mark of the Web (MOTW) Protection Mechanism Failure Vulnerabilitycisa-kev · 2024-09-10
External references
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