Microsoft has disclosed two critical security vulnerabilities in GitHub Copilot and Visual Studio that could allow attackers to bypass essential security features.
Both vulnerabilities were released on November 11, 2025, and have been assigned an Important severity rating.
Path Traversal Vulnerability in Visual Studio
The first vulnerability, tracked as CVE-2025-62449, stems from improper limitations in pathname handling and is classified as a path traversal flaw (CWE-22).
This weakness allows attackers to access files and directories outside of restricted areas on a local system.
With a CVSS score of 6.8, this vulnerability requires low attack complexity and local access with limited privileges.
The threat actor needs user interaction to trigger the vulnerability, but once exploited, could achieve high confidentiality and integrity impact, along with limited availability impact.
The attack vector is local, meaning the attacker must have some level of access to the affected system.
| CVE ID | Product | Impact | Weakness | CVSS Score |
|---|---|---|---|---|
| CVE-2025-62449 | Visual Studio | Security Feature Bypass | CWE-22: Path Traversal | 6.8 |
| CVE-2025-62453 | GitHub Copilot | Security Feature Bypass | CWE-1426: AI Output Validation | 5.0 |
The risk intensifies, as many developers use Visual Studio as their primary development environment, potentially exposing sensitive source code and configuration files to unauthorized access.
AI Output Validation Flaw in GitHub Copilot
The second vulnerability, CVE-2025-62453, involves improper validation of generative AI output (CWE-1426) and a failure in the protection mechanism (CWE-693).
This flaw specifically targets GitHub Copilot’s AI-generated code suggestions.
With a CVSS score of 5.0, this vulnerability could allow attackers to manipulate AI output to bypass security checks or inject malicious code recommendations.
This vulnerability is particularly concerning as developers often trust and implement code suggestions from AI assistants without thorough scrutiny.
Attackers exploiting this flaw could inject backdoors or security flaws directly into projects through compromised code suggestions. Both vulnerabilities require user interaction and local system access, but carry significant risks for development teams.
Microsoft has released patches through official CVE channels, and developers using GitHub Copilot and Visual Studio should apply updates immediately.
The disclosure highlights growing security concerns around AI-assisted development tools and the importance of validating generated code before implementation.
Organizations should review their development practices and security policies surrounding AI code generation tools.
Development teams are advised to check Microsoft’s official security advisories for available patches and to implement proper code review processes for all AI-generated suggestions.
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