CVE WatchAug 10, 2026

CVE-2024-38217

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

CVSS

5.4

Medium

EPSS

10.0%

p95

KEV

YES

Sep 10, 2024

Exploit Today

0-100

Published: Sep 10, 2024 · Last modified: Aug 10, 2026 · CWE-693

EPSS · 30d

9.8%EPSS · 30 days10.0%

2026-08-022026-08-30

KEV catalog record

Product

Microsoft / Windows

Vulnerability

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

Added to KEV

Sep 10, 2024

Remediate by

Oct 1, 2024

Known ransomware use

Summary description

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.

Required action

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

Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38217; https://nvd.nist.gov/vuln/detail/CVE-2024-38217

Technical description

Windows Mark of the Web Security Feature Bypass Vulnerability

Official references

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