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CVE-2026-21523

GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability

CVSS 8 HIGHEPSS 0.8%CWE-367
Time-of-check time-of-use (toctou) race condition in GitHub Copilot and Visual Studio allows an authorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Productos afectados
Microsoft · Microsoft Visual Studio Code CoPilot Chat ExtensionMicrosoft · Visual Studio Code

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Referencias
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21523