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CVE-2026-21523
HIGH8.0
Description
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.
CVE Details
CVSS v3.1 Score8.0
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredLOW
User InteractionREQUIRED
Published2/10/2026
Last Modified2/11/2026
Sourcenvd
Honeypot Sightings0
Affected Products
microsoft:visual_studio_code
Weaknesses (CWE)
CWE-367
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21523(secure@microsoft.com)
IOC Correlations
No correlations recorded
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