CVE-2026-21256highCWE-77CWE-94

CVE-2026-21256: high-severity vulnerability in Microsoft Visual Studio 2022 version 17.14

GitHub Copilot and Visual Studio Remote Code Execution Vulnerability

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.8epss 1.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft Visual Studio 2022 version 17.14Microsoft · Microsoft Visual Studio 2026 version 18.3
Related CVEs — Microsoft Visual Studio 2022 version 17.14

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