CVE-2026-21256: Microsoft Visual Studio 2022

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft Visual Studio 2022: from 17.14.0, before 17.14.26 (fixed in 17.14.26)

Published 2026-02-10. Last modified 2026-06-17.