A significant security issue has been identified in OpenVPN Connect for macOS, which allows attackers with local access to execute commands with elevated privileges. This exploit leverages the application’s background service component to achieve privilege escalation.
Details of the Vulnerability
Identified as CVE-2026-9560, this vulnerability impacts OpenVPN Connect versions ranging from 3.5.1 to 3.8.1, earning it a CVSS 4.0 base score of 9.4, making it critical. The flaw is rooted in the privileged helper component of OpenVPN’s macOS application, which manages VPN connections with elevated rights.
Classified under CWE-78 (OS Command Injection), the vulnerability is triggered through a local Inter-Process Communication (IPC) channel. Attackers who have gained local access can exploit this channel to execute operating system commands at the root level without needing user consent.
Research and Disclosure
The vulnerability was responsibly disclosed by security experts Ismael Esquilichi, Pablo Redondo, and Lê Đức Ninh. Currently, there is no public proof-of-concept exploit available, and no known incidents of the vulnerability being actively exploited.
In addition to addressing CVE-2026-9560, OpenVPN has resolved two other issues in the latest release: a browser authentication failure and a crash related to blank profile imports. These fixes improve the stability and security of the application.
Recommended Actions
To mitigate risks, users and security teams are advised to update to the latest version of OpenVPN Connect, surpassing version 3.8.1. It is crucial to restrict local access to affected systems and monitor for unusual IPC communications involving OpenVPN processes.
Organizations should conduct audits of endpoint access controls to reduce the local attack surface, especially in environments where macOS systems are shared among multiple users. Unpatched systems pose a risk of lateral movement, necessitating prompt action.
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