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High7.5Microsoft Server

High [CVE-2024-43521] Windows Hyper-V Denial of Service Vulnerability

This high-severity Microsoft Server advisory covers CVE-2024-43521 affecting Windows Server 2012 (Server Core installation), Windows Server 2012 R2 (Server Core installation), Windows Server 2016 (Server Core installation).

CVE-2024-43521 Published Oct 8, 2024Updated by vendor Aug 19, 2026
CVE-2024-43521
Affected products & platforms
Microsoft ServerWindows Server
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Summary

Windows Hyper-V Denial of Service Vulnerability

Affected products named by the advisory: Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); and 6 more.

Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server 2022, 23H2 Edition (Server Core installation).

Affected versions
  • Windows Server 2012 6.2.9200.0 before 6.2.9200.25118
  • Windows Server 2012 (Server Core installation) 6.2.9200.0 before 6.2.9200.25118
  • Windows Server 2012 R2 6.3.9600.0 before 6.3.9600.22221
  • Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 before 6.3.9600.22221
  • Windows Server 2016 10.0.14393.0 before 10.0.14393.7428
  • Windows Server 2016 (Server Core installation) 10.0.14393.0 before 10.0.14393.7428
  • Windows Server 2019 10.0.17763.0 before 10.0.17763.6414
  • Windows Server 2019 (Server Core installation) 10.0.17763.0 before 10.0.17763.6414
  • Windows Server 2022 10.0.20348.0 before 10.0.20348.2762
  • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 before 10.0.25398.1189

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions
  • 6.2.9200.25118
  • 6.3.9600.22221
  • 10.0.14393.7428
  • 10.0.17763.6414
  • 10.0.20348.2762
  • 10.0.25398.1189

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 6.2.9200.25118, 6.3.9600.22221, 10.0.14393.7428, 10.0.17763.6414, 10.0.20348.2762, 10.0.25398.1189. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Discussion(0)

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