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CVE

CVE-2026-21523

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.
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CVE

CVE-2026-21523

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.

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

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

Severity

8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8
EPSS Probability
0.00035%
EPSS Percentile
0.10115%
Introduced Version
0
Fix Available
591199df409fbf59b4b52d5ad4ee0470152a9b31

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