EXECUTIVE SUMMARY:
CVE-2026-9560 with a CVSS score of 9.4 is a critical privilege‑escalation flaw in the OpenVPN Connect client for macOS that affects versions 3.5.1 through 3.8.1. The vulnerability resides in the privileged helper component that processes local inter‑process communication (IPC) without adequate validation, allowing a maliciously crafted IPC message to be injected by a local user. An attacker who already has a standard user account on the target machine can send the manipulated input through the IPC channel, causing the helper to execute arbitrary commands with root privileges automatically. Successful exploitation grants the attacker full administrative control of the macOS endpoint, enabling actions such as installing persistent malware, extracting sensitive corporate data, or moving laterally across the network. The business impact includes potential data breaches, loss of confidentiality, disruption of services, and compliance violations. Exploitation requires the presence of the vulnerable OpenVPN Connect version, a locally authenticated user, and the ability to interact with the helper’s IPC interface; no remote network access is needed.[/subscribe_to_unlock_form]
EXECUTIVE SUMMARY:
CVE-2026-9560 with a CVSS score of 9.4 is a critical privilege‑escalation flaw in the OpenVPN Connect client for macOS that affects versions 3.5.1 through 3.8.1. The vulnerability resides in the privileged helper component that processes local inter‑process communication (IPC) without adequate validation, allowing a maliciously crafted IPC message to be injected by a local user. An attacker who already has a standard user account on the target machine can send the manipulated input through the IPC channel, causing the helper to execute arbitrary commands with root privileges automatically. Successful exploitation grants the attacker full administrative control of the macOS endpoint, enabling actions such as installing persistent malware, extracting sensitive corporate data, or moving laterally across the network. The business impact includes potential data breaches, loss of confidentiality, disruption of services, and compliance violations. Exploitation requires the presence of the vulnerable OpenVPN Connect version, a locally authenticated user, and the ability to interact with the helper’s IPC interface; no remote network access is needed.[emaillocker id="1283"]
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REFERENCES:
The following reports contain further technical details:
https://securityonline.info/openvpn-connect-macos-vulnerability-patched/