Unrated severityNVD Advisory· Published Feb 10, 2026· Updated Apr 10, 2026

GitHub Copilot and Visual Studio Remote Code Execution Vulnerability

CVE-2026-21256

Description

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

GitHub/Copilot Clillm-fuzzy
Microsoft/Microsoft Visual Studio 2022 version 17.14v5
Range: 17.14.0
Microsoft/Microsoft Visual Studio 2026 version 18.3v5
Range: 18.3.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21256mitrevendor-advisorypatch

News mentions

No linked articles in our index yet.

cvss	0.000
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000