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ParaShells is a local privilege-escalation vulnerability in Parallels Desktop for Mac, confirmed in version 26.4.0 build 57513 on Apple Silicon systems. A root-privileged Parallels dispatcher service accepts connections from unprivileged local clients through a world-writable Unix-domain socket and relies on peer credentials without validating that the client is Parallels-signed. An authenticated local client can invoke appliance installation with a crafted parent-directory value. The service constructs a tar extraction command as a string and passes it through Qt QProcess::splitCommand; an embedded quotation mark terminates the intended argument and permits injection of additional tar arguments. The injected tar compression-program option causes macOS tar to launch an attacker-selected program as root.
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ParaShells is a local privilege-escalation vulnerability in Parallels Desktop for Mac. It combines a world-writable Unix socket, weak local-client authentication, and argument injection in appliance extraction, allowing a low-privileged local user to cause macOS tar to execute an attacker-controlled script as root.
ParaShells is a critical local privilege-escalation vulnerability in Parallels Desktop for Mac. A local unprivileged process can connect to a world-writable prl_disp_service socket, pass weak client authentication, and inject tar arguments during appliance extraction. This can cause the root-running privileged service to execute an attacker-controlled external program, resulting in root-level code execution and complete compromise of the affected Mac.
A local privilege-escalation vulnerability in Parallels Desktop's prl_disp_service. An unprivileged local user can inject additional tar command-line options through an appliance-folder path and abuse macOS tar's --use-compress-program option to execute an attacker-selected program as root.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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