CVE-2025-53773 in Python Extension for Visual Studio Code
Summary
by MITRE • 08/12/2025
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code locally.
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Analysis
by VulDB Data Team • 08/15/2025
The vulnerability identified as CVE-2025-53773 represents a critical command injection flaw affecting GitHub Copilot and Visual Studio environments. This security weakness stems from inadequate sanitization of user inputs when constructing command strings for execution within the development ecosystem. The vulnerability specifically manifests when the integrated development environment processes user-provided data without proper neutralization of special command elements such as semicolons, ampersands, or backticks that could alter the intended execution flow of shell commands. Attackers exploiting this vulnerability can craft malicious inputs that bypass input validation mechanisms and inject arbitrary commands into the underlying shell execution context. The flaw exists within the command construction and execution pathways of the Copilot extension and Visual Studio integration components, where user-supplied text or code snippets are directly incorporated into system commands without proper escaping or encoding.
The technical exploitation of this vulnerability follows established patterns of command injection attacks that map to CWE-77 and CWE-88 within the Common Weakness Enumeration framework. Attackers can leverage this weakness to execute arbitrary code on the local system with the privileges of the user running Visual Studio or Copilot. The attack surface extends to scenarios where developers interact with code completion features, automated code generation, or integrated terminal functionalities that may inadvertently process user inputs through shell command execution paths. This vulnerability particularly impacts environments where Copilot's code suggestions or automated debugging features interact with system commands, creating multiple potential attack vectors for malicious input injection. The flaw is classified under the ATT&CK technique T1059.003 for command and scripting interpreter, specifically targeting the Windows Command Prompt and PowerShell execution contexts within development environments.
The operational impact of CVE-2025-53773 extends beyond simple code execution to encompass potential privilege escalation and persistent access within development workstations. An attacker who successfully exploits this vulnerability can gain unauthorized access to sensitive development environments, potentially compromising source code repositories, development credentials, and system configurations. The local execution nature of the vulnerability means that attacks can occur without requiring network connectivity or external attack vectors, making detection more challenging as malicious activities may appear as legitimate user actions. Organizations utilizing GitHub Copilot within Visual Studio environments face significant risk, as the vulnerability can be exploited through seemingly benign code completion features or automated debugging processes. The threat landscape for this vulnerability includes both malicious insiders and external attackers who may gain access to development environments through social engineering or other initial compromise techniques.
Mitigation strategies for CVE-2025-53773 should prioritize immediate patch deployment from GitHub and Microsoft to address the root cause of command injection in the Copilot extension and Visual Studio integration. Organizations should implement strict input validation and sanitization mechanisms for all user inputs processed through shell command execution paths, ensuring that special characters are properly escaped or encoded before command construction. Security teams should consider implementing runtime application self-protection measures and monitoring for unusual command execution patterns within development environments. Network segmentation and privilege separation should be enforced to limit the potential impact of successful exploitation, while regular security assessments of integrated development environments should include testing for command injection vulnerabilities. Additionally, developers should be trained to recognize potential command injection attack vectors and avoid using user-provided inputs directly in shell command construction. The implementation of secure coding practices and regular security updates for development tools remains essential for protecting against this class of vulnerability. Organizations should also consider implementing application whitelisting and execution control measures to prevent unauthorized command execution within development environments, particularly when dealing with automated code generation features that may interact with system commands.