CISA-confirmed known exploited vulnerability

CVE-2024-38217

Microsoft Windows Mark of the Web (MOTW) Protection Mechanism Failure Vulnerability

Microsoft · Windows

Vulnerability details

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.

Added to CISA KEV: 2024-09-10

Ransomware campaign use: Unknown

CISA due date: 2024-10-01

Defensive guidance from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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