Improper neutralization of special elements used in an OS command ('command injection') in Cursor allows an unauthorized attacker to execute commands...
Description
Improper neutralization of special elements used in an OS command ('command injection') in Cursor allows an unauthorized attacker to execute commands that are outside of those specified in the allowlist, resulting in arbitrary code execution.
AI Analyst Comment
Remediation
Update Improper neutralization of special elements used in an OS command Multiple Products to the latest version. Monitor for exploitation attempts and review access logs.
Executive Summary:
A critical command injection vulnerability, identified as CVE-2025-62354, has been discovered in multiple Cursor products. This flaw allows an unauthorized attacker to bypass security controls and execute arbitrary commands on an affected system, which can lead to a full system compromise, data theft, and operational disruption.
Vulnerability Details
CVE-ID: CVE-2025-62354
Affected Software: Multiple Cursor Products
Affected Versions: See vendor advisory for specific affected versions
Vulnerability: This vulnerability is a command injection flaw, categorized as CWE-78 (Improper Neutralization of Special Elements used in an OS Command). The affected software fails to properly sanitize user-supplied input before passing it to a system shell command. An unauthorized attacker can craft input containing special shell metacharacters (e.g.,
;,|,&&,$(command)) to bypass an intended command allowlist. When the application processes this malicious input, the operating system's command interpreter executes the attacker's injected commands with the same privileges as the running application, resulting in arbitrary code execution.Business Impact
This vulnerability is rated as critical with a CVSS score of 9.8. Successful exploitation could lead to a complete compromise of the affected system. The potential business impact includes theft of sensitive corporate or customer data, deployment of ransomware or other malware, disruption of critical business services, and unauthorized access to the internal network. A compromise of this nature could result in significant financial loss, reputational damage, and regulatory penalties.
Remediation Plan
Immediate Action: Update affected Cursor products to the latest version as recommended by the vendor. After patching, monitor systems for any signs of exploitation and review historical access and application logs for suspicious activity that may have occurred prior to the update.
Proactive Monitoring: Security teams should actively monitor for signs of compromise. This includes looking for unusual child processes spawned by the Cursor application, unexpected outbound network connections from the host system, and command-line logs containing shell metacharacters. Monitor endpoint detection and response (EDR) solutions for alerts related to suspicious process execution chains originating from the affected software.
Compensating Controls: If immediate patching is not feasible, implement the following controls to mitigate risk:
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of November 26, 2025, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, due to the critical severity and the relative simplicity of exploiting command injection flaws, it is highly probable that a functional exploit will be developed by threat actors in the near future. The vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog.
Analyst Recommendation
This vulnerability presents a critical and immediate risk to the organization. Due to the high potential for a complete system compromise, the highest priority must be given to patching all affected systems. We strongly recommend that all system owners identify and update vulnerable instances of Cursor products without delay. If patching is not immediately possible, the compensating controls outlined above must be implemented as a temporary measure to reduce the attack surface.