Overview
A critical security vulnerability, identified as CVE-2025-62354, has been discovered in Cursor. This flaw, categorized as a command injection vulnerability, could allow an unauthorized attacker to execute arbitrary code on systems running the affected Cursor version. The vulnerability stems from improper neutralization of special elements used in OS commands, bypassing intended allowlists and leading to potentially devastating consequences.
Technical Details
CVE-2025-62354 is a command injection vulnerability. This means that the application fails to properly sanitize user-supplied input that is later used in the execution of operating system commands. Specifically, Cursor fails to adequately neutralize special characters or commands that could be interpreted by the underlying operating system. This lack of proper input validation allows an attacker to inject malicious commands into the system, which the application will then execute with the privileges of the Cursor process. The issue lies in the improper implementation of the input validation and allowlist mechanism.
CVSS Analysis
This vulnerability has been assigned a CVSS score of 9.8 (Critical), highlighting its severity. The breakdown is as follows:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
This high score reflects the ease of exploitation and the potentially devastating impact of a successful attack.
Possible Impact
Successful exploitation of CVE-2025-62354 can lead to a range of severe consequences, including:
- Arbitrary Code Execution: An attacker can execute arbitrary code on the affected system, potentially gaining full control.
- Data Breach: Sensitive data stored on or accessible by the system could be compromised.
- System Compromise: The entire system could be compromised, leading to data loss, system instability, or use as a bot in a botnet.
- Denial of Service (DoS): An attacker could potentially cause a denial-of-service condition, making the system unavailable to legitimate users.
Mitigation and Patch Steps
Immediate action is required to mitigate the risk posed by CVE-2025-62354.
- Apply the Patch: The primary mitigation step is to apply the latest security patch released by Cursor. Check the official Cursor website for the latest updates and instructions.
- Input Validation: Carefully review and strengthen all input validation routines within Cursor to ensure that special characters and commands are properly neutralized.
- Least Privilege: Ensure that the Cursor application runs with the minimum necessary privileges.
- Network Segmentation: Implement network segmentation to limit the potential damage from a compromised system.
- Monitoring: Implement robust monitoring and logging to detect and respond to suspicious activity.
