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CVE-2024-43633: Windows Hyper-V Denial of Service Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-12 · updated 2026-06-17
• Weakness: CWE-591

Description

Windows Hyper-V Denial of Service Vulnerability

Affected products

• Microsoft Windows 11: before 10.0.22621.4460 — fixed in 10.0.22621.4460
• Microsoft Windows 11: before 10.0.22631.4460 — fixed in 10.0.22631.4460
• Microsoft Windows 11: before 10.0.26100.2314 — fixed in 10.0.26100.2314
• Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.4460 — fixed in 10.0.22621.4460
• Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.4460 — fixed in 10.0.22631.4460
• Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.4460 — fixed in 10.0.22631.4460
• Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.2314 — fixed in 10.0.26100.2314

How to fix

Upgrade to a fixed version: Microsoft Windows 11 10.0.22621.4460; Microsoft Windows 11 10.0.22631.4460; Microsoft Windows 11 10.0.26100.2314; Microsoft Windows 11 10.0.22621.4460; Microsoft Windows 11 version 22H3 10.0.22631.4460; Microsoft Windows 11 10.0.22631.4460; Microsoft Windows 11 10.0.26100.2314. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43633

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