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CVE-2024-38217

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

5.4 MEDIUMActively exploited (CISA KEV)Public exploitEPSS 10.0%
  1. Published10 Sept 2024
  2. Added to CISA KEV10 Sept 2024
  3. Remediation due1 Oct 2024
Actively exploited (CISA KEV)

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 KEV: 10 Sept 2024Federal remediation due: 1 Oct 2024

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Affected products

Microsoft Windows 10 1507< 10.0.10240.20766
Microsoft Windows 10 1607< 10.0.14393.7336
Microsoft Windows 10 1809< 10.0.17763.6293
Microsoft Windows 10 21h2< 10.0.19044.4894
Microsoft Windows 10 22h2< 10.0.19045.4894
Microsoft Windows 11 21h2< 10.0.22000.3197
Microsoft Windows 11 22h2< 10.0.22621.4169
Microsoft Windows 11 23h2< 10.0.22631.4169
Microsoft Windows 11 24h2< 10.0.26100.1742
Microsoft Windows Server 2008r2
Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.7336
Microsoft Windows Server 2019< 10.0.17763.6293
Microsoft Windows Server 2022< 10.0.20348.2700
Microsoft Windows Server 2022 23h2< 10.0.25398.1128

Remediation

Fixed in
Microsoft Windows 10 1507≥ 10.0.10240.20766
Microsoft Windows 10 1607≥ 10.0.14393.7336
Microsoft Windows 10 1809≥ 10.0.17763.6293
Microsoft Windows 10 21h2≥ 10.0.19044.4894
Microsoft Windows 10 22h2≥ 10.0.19045.4894
Microsoft Windows 11 21h2≥ 10.0.22000.3197
Microsoft Windows 11 22h2≥ 10.0.22621.4169
Microsoft Windows 11 23h2≥ 10.0.22631.4169
Microsoft Windows 11 24h2≥ 10.0.26100.1742
Microsoft Windows Server 2016≥ 10.0.14393.7336

References

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Frequently asked

Is CVE-2024-38217 being actively exploited?

Yes. CVE-2024-38217 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 10 Sept 2024.

How severe is CVE-2024-38217?

CVE-2024-38217 has a CVSS 3.1 base score of 5.4, rated medium. EPSS estimates a 10.0% probability of exploitation.

Which products are affected by CVE-2024-38217?

Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, and 10 more.

How do I fix CVE-2024-38217?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1507 10.0.10240.20766, Microsoft Windows 10 1607 10.0.14393.7336, Microsoft Windows 10 1809 10.0.17763.6293 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-38217 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.