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Vulnerability DatabaseCVE-2026-21257

CVE-2026-21257: 
Visual Studio 2022 vulnerability analysis and mitigation

Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network.

Source: NVD

Related Visual Studio 2022 vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-55315CRITICAL9.9
  • C#C#
  • aspnetcore-runtime-8.0
NoYesOct 14, 2025
CVE-2026-21256HIGH8.8
  • Visual Studio 2022Visual Studio 2022
  • cpe:2.3:a:microsoft:visual_studio_2022
NoYesFeb 10, 2026
CVE-2026-21257HIGH8
  • Visual Studio 2022Visual Studio 2022
  • cpe:2.3:a:microsoft:visual_studio_2022
NoYesFeb 10, 2026
CVE-2025-62214MEDIUM6.7
  • Visual Studio 2022Visual Studio 2022
  • cpe:2.3:a:microsoft:visual_studio_2022
NoYesNov 11, 2025
CVE-2025-55248MEDIUM5.7
  • C#C#
  • dotnet-runtime-9.0
NoYesOct 14, 2025

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