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CVE-2024-43573

Microsoft Windows MSHTML Platform Spoofing

6.5 MEDIUMActively exploited (CISA KEV)EPSS 46.1%
  1. Published8 Oct 2024
  2. Added to CISA KEV8 Oct 2024
  3. Remediation due29 Oct 2024
Actively exploited (CISA KEV)

Microsoft Windows MSHTML Platform contains an unspecified spoofing vulnerability which can lead to a loss of confidentiality.

Added to KEV: 8 Oct 2024Federal remediation due: 29 Oct 2024

Description

Windows MSHTML Platform Spoofing Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

Microsoft Windows 10 1507< 10.0.10240.20796
Microsoft Windows 10 1607< 10.0.14393.7428
Microsoft Windows 10 1809< 10.0.17763.6414
Microsoft Windows 10 21h2< 10.0.19044.5011
Microsoft Windows 10 22h2< 10.0.19045.5011
Microsoft Windows 11 21h2< 10.0.22000.3260
Microsoft Windows 11 22h2< 10.0.22621.4317
Microsoft Windows 11 23h2< 10.0.22631.4317
Microsoft Windows 11 24h2< 10.0.26100.2033
Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.7428
Microsoft Windows Server 2019< 10.0.17763.6414
Microsoft Windows Server 2022< 10.0.20348.2762
Microsoft Windows Server 2022 23h2< 10.0.25398.1189

Remediation

Fixed in
Microsoft Windows 10 1507≥ 10.0.10240.20796
Microsoft Windows 10 1607≥ 10.0.14393.7428
Microsoft Windows 10 1809≥ 10.0.17763.6414
Microsoft Windows 10 21h2≥ 10.0.19044.5011
Microsoft Windows 10 22h2≥ 10.0.19045.5011
Microsoft Windows 11 21h2≥ 10.0.22000.3260
Microsoft Windows 11 22h2≥ 10.0.22621.4317
Microsoft Windows 11 23h2≥ 10.0.22631.4317
Microsoft Windows 11 24h2≥ 10.0.26100.2033
Microsoft Windows Server 2016≥ 10.0.14393.7428

References

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Frequently asked

Is CVE-2024-43573 being actively exploited?

Yes. CVE-2024-43573 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Oct 2024.

How severe is CVE-2024-43573?

CVE-2024-43573 has a CVSS 3.1 base score of 6.5, rated medium. EPSS estimates a 46.1% probability of exploitation.

Which products are affected by CVE-2024-43573?

Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, and 9 more.

How do I fix CVE-2024-43573?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1507 10.0.10240.20796, Microsoft Windows 10 1607 10.0.14393.7428, Microsoft Windows 10 1809 10.0.17763.6414 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-43573 against the real software inventory on every managed device, as each hourly inventory arrives. 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, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. 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.