CVE-2024-43487: Windows Mark of the Web Security Feature Bypass Vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-10 · updated 2026-08-10
Weakness: CWE-693

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

Affected products

Microsoft Windows 10 Version 1507: before 10.0.10240.20766 — fixed in 10.0.10240.20766
Microsoft Windows 10 1607: before 10.0.14393.7336 — fixed in 10.0.14393.7336
Microsoft Windows 10: before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows 10: before 10.0.19044.4894 — fixed in 10.0.19044.4894
Microsoft Windows 10: before 10.0.19045.4894 — fixed in 10.0.19045.4894
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: before 10.0.14393.7336 — fixed in 10.0.14393.7336
Microsoft Windows Server 2019: before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.20766 — fixed in 10.0.10240.20766
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.7336 — fixed in 10.0.14393.7336
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.6293 — fixed in 10.0.17763.6293
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.4894 — fixed in 10.0.19044.4894
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.4894 — fixed in 10.0.19045.4894
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.25073 — fixed in 6.2.9200.25073
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.22175 — fixed in 6.3.9600.22175
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.7336 — fixed in 10.0.14393.7336
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.6293 — fixed in 10.0.17763.6293

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.20766; Microsoft Windows 10 1607 10.0.14393.7336; Microsoft Windows 10 10.0.17763.6293; Microsoft Windows 10 10.0.19044.4894; Microsoft Windows 10 10.0.19045.4894; Microsoft Windows Server 2016 10.0.14393.7336; Microsoft Windows Server 2019 10.0.17763.6293; Microsoft Windows 10 Version 1507 10.0.10240.20766; Microsoft Windows 10 1607 10.0.14393.7336; Microsoft Windows 10 10.0.17763.6293; Microsoft Windows 10 10.0.19044.4894; Microsoft Windows 10 10.0.19045.4894. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43487

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