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CVE-2024-43639

Microsoft Windows Server 2016 remote code execution

9.8 CRITICALEPSS 8.94%
  1. Published12 Nov 2024

Description

Windows KDC Proxy Remote Code Execution Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.7515
Microsoft Windows Server 2019< 10.0.17763.6532
Microsoft Windows Server 2022< 10.0.20348.2849
Microsoft Windows Server 2022 23h2< 10.0.25398.1251
Microsoft Windows Server 2025< 10.0.26100.2314

Remediation

Fixed in
Microsoft Windows Server 2016≥ 10.0.14393.7515
Microsoft Windows Server 2019≥ 10.0.17763.6532
Microsoft Windows Server 2022≥ 10.0.20348.2849
Microsoft Windows Server 2022 23h2≥ 10.0.25398.1251
Microsoft Windows Server 2025≥ 10.0.26100.2314

Frequently asked

Is CVE-2024-43639 being actively exploited?

CVE-2024-43639 is not in the CISA KEV catalog. Its EPSS exploit probability is 8.94%.

How severe is CVE-2024-43639?

CVE-2024-43639 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 8.94% probability of exploitation.

Which products are affected by CVE-2024-43639?

Affected products include Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23h2, and 1 more.

How do I fix CVE-2024-43639?

Upgrade affected software to a fixed version, for example Microsoft Windows Server 2016 10.0.14393.7515, Microsoft Windows Server 2019 10.0.17763.6532, Microsoft Windows Server 2022 10.0.20348.2849 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-43639 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. 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.