Plugin Alliance Installation Manager CVE-2025-55076 Local Privilege Escalation via XPC Service

Vulnerability Key Information CVE ID CVE-2025-55076 Affected Product Plugin Alliance Installation Manager ≤ 1.4.0 Affected Component InstallationHelper XPC Service (com.plugin-alliance.pa-installationhelper) Vulnerability Type Incorrect Access Control Attack Type Local Summary A local privilege escalation vulnerability exists in the XPC service. The service accepts unauthenticated XPC messages from any local user and passes attacker-controlled input to the system without proper authentication checks. This allows a local attacker to execute arbitrary commands with root privileges. Technical Analysis Insecure XPC Connection Handling: The service exposes a publicly accessible XPC interface without properly authenticating the calling process. Broken Authorization Logic: The helper attempts to enforce authorization using Apple’s security framework, but the implementation is flawed. Unsafe Command Execution: The method calls without properly validating input, directly passing user-controlled data to . Exploitation By compiling and running the provided exploit code, an attacker can obtain a persistent root shell on the compromised system. Remediation Implement robust client-side validation controls. Enforce authentication and authorization checks for XPC interfaces. Remove usage of sensitive privileges. Avoid direct calls to ; instead, use safer alternatives such as or . Disclosure Timeline 2023-08-01: Vulnerability discovered. 2023-08-02: Initial technical validation and proof-of-concept developed. 2023-08-18: Vendor confirmed the issue; escalation attempt submitted to MITRE CVE program. 2023-11-28: Received CNA response. CVE ID reserved: CVE-2025-55076.

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Plugin Alliance Installation Manager CVE-2025-55076 Local Privilege Escalation via XPC Service