CVE-2025-64671 is a command injection vulnerability classified under CWE-77 found in the Microsoft GitHub Copilot Plugin for JetBrains IDEs, specifically version 1.0.0. The flaw arises from improper neutralization of special elements used in commands, allowing an attacker to inject and execute arbitrary code locally. The vulnerability does not require any privileges or user interaction, but the attacker must have local access to the system where the plugin is installed. This means that if an attacker can run code or commands on the developer's machine, they can leverage this vulnerability to escalate their capabilities and execute arbitrary commands with the same privileges as the user running the IDE. The CVSS v3.1 base score is 8.4, indicating high severity, with impacts on confidentiality, integrity, and availability rated as high. The attack vector is local (AV:L), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The scope is unchanged (S:U), meaning the vulnerability affects only the local system. Although no exploits are currently known in the wild, the vulnerability poses a significant risk to development environments, potentially allowing attackers to compromise source code, inject malicious code, or disrupt development workflows. The plugin is widely used in JetBrains IDEs, which are popular among European software developers, increasing the risk to organizations relying on these tools. No patch links are currently available, indicating that mitigation depends on vendor updates and interim protective measures.

For European organizations, this vulnerability poses a critical risk to software development environments. Successful exploitation can lead to unauthorized code execution, potentially allowing attackers to access sensitive source code, inject malicious code into projects, or disrupt development processes. This can result in intellectual property theft, introduction of backdoors or vulnerabilities into software products, and operational downtime. The impact extends beyond individual developers to the broader supply chain, as compromised code can propagate through builds and deployments. Organizations in sectors with high reliance on software development, such as finance, automotive, telecommunications, and technology, face increased risk. The local attack vector means that insider threats or attackers who gain initial local access can escalate their privileges significantly. Confidentiality, integrity, and availability of development environments and code repositories are all at risk, potentially leading to severe reputational and financial damage.

1. Monitor Microsoft and JetBrains official channels for patches addressing CVE-2025-64671 and apply updates immediately upon release. 2. Until a patch is available, restrict local access to systems running the GitHub Copilot Plugin for JetBrains IDEs to trusted personnel only. 3. Implement strict endpoint security controls, including application whitelisting and behavior monitoring, to detect and prevent unauthorized code execution. 4. Use network segmentation to isolate development environments from less trusted networks and users. 5. Educate developers and IT staff about the risks of local exploitation and enforce least privilege principles on developer workstations. 6. Regularly audit installed plugins and extensions in IDEs to ensure only necessary and trusted components are used. 7. Employ runtime application self-protection (RASP) or host-based intrusion detection systems (HIDS) to detect anomalous command execution patterns. 8. Maintain comprehensive logging and monitoring of developer environments to quickly identify suspicious activities related to command injection attempts.