CVE-2026-42915HighCVSS 5.5

Microsoft Windows VMSwitch Denial of Service Vulnerability

Published
June 10, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-42915 →

📋 Description

Incorrect calculation of buffer size in Windows VMSwitch allows an authorized attacker to deny service locally.

🎯 Affected products18

  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Remediation

KB5094128 (Security Update) — fixed build 10.0.20348.5256 KB5094127 (Security Update) — fixed build 10.0.19044.7417 KB5094127 (Security Update) — fixed build 10.0.19045.7417 KB5094125 (Security Update) — fixed build 10.0.26100.32995 KB5094126 (Security Update) — fixed build 10.0.26200.8655 KB5093998 (Security Update) — fixed build 10.0.22631.7219 KB5094126 (Security Update) — fixed build 10.0.26100.8655 KB5095051 (Security Update) — fixed build 10.0.28000.2269

🔗 References (13)