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

GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability

CVE-2026-21257

Description

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.

Affected products

Microsoft/Github Copilot Chatllm-fuzzy
Microsoft/Visual Studiollm-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-2026-21257mitrevendor-advisorypatch

News mentions

No linked articles in our index yet.

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