Name: CVE-2026-21523: Time-of-check Time-of-use (TOCTOU) Race Condition
Creator: Rapid7
Published: 2026-02-10T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-21523, CVSS 8, EPSS 0.00035

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 Details

CVSS 3.1 Base Score: 8
CVSS 3.1 Vector: (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)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Microsoft Vs_code	—	Update Microsoft Visual Studio Code to the latest version	Feb 10, 2026	Feb 10, 2026

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CVSS Details

Covered by Rapid7

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