Product:
GitHub Copilot and Visual Studio
Summary
A time-of-check time-of-use race condition in GitHub Copilot and Visual Studio allows an authorized attacker to execute code over a network. This vulnerability can lead to significant impacts on confidentiality, integrity, and availability. Attackers can exploit this flaw if they have the necessary privileges and user interaction is required.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 8 | CVE-2026-21523 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access and can leverage the race condition to execute arbitrary code over the network. This requires the attacker to manipulate the timing of operations to gain control over the execution flow, potentially leading to unauthorized actions within the affected applications.
Affected Products
- GitHub Copilot: A tool that assists developers by suggesting code snippets and functions based on context.
- Visual Studio: An integrated development environment used for developing applications across various platforms.
Mitigation
To mitigate this vulnerability, users should ensure that they are using the latest versions of GitHub Copilot and Visual Studio. Regular updates and patches from Microsoft should be applied promptly to address any security vulnerabilities. Additionally, implementing strict access controls and monitoring network activity can help reduce the risk of exploitation.