Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

Summary

Microsoft Windows systems running the Hyper-V virtualization feature are affected by this vulnerability in the NT Kernel Integration Virtualization Service Provider component. A local attacker who can run code on an affected system could exploit it to gain higher privileges than they were granted.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Timeline

1. Jan 14, 2025Added to CISA KEV

   CISA has evidence of exploitation in the wild

2. Jan 14, 2025, 6:04 PM UTCCVE published
3. Feb 4, 2025CISA remediation deadline

   Due date for US federal agencies to patch

4. Jun 9, 2026, 6:30 PM UTCRecord last updated
5. Oct 22, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• Microsoft Windows 10 Version 21H2

  From 10.0.19044.0 · fixed in 10.0.19044.5371

• Microsoft Windows 10 Version 22H2

  From 10.0.19045.0 · fixed in 10.0.19045.5371

• Microsoft Windows 11 version 22H2

  From 10.0.22621.0 · fixed in 10.0.22621.4751

• Microsoft Windows 11 version 22H3

  From 10.0.22631.0 · fixed in 10.0.22631.4751

• Microsoft Windows 11 Version 23H2

  From 10.0.22631.0 · fixed in 10.0.22631.4751

• Microsoft Windows 11 Version 24H2

  From 10.0.26100.0 · fixed in 10.0.26100.2894

• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

  From 10.0.25398.0 · fixed in 10.0.25398.1369

• Microsoft Windows Server 2025

  From 10.0.26100.0 · fixed in 10.0.26100.2894

• Microsoft Windows Server 2025 (Server Core installation)

  From 10.0.26100.0 · fixed in 10.0.26100.2894

References 1