A critical security vulnerability was found in Plantronics Hub software, which has been discontinued by HP. Attackers could escalate privileges using an unquoted search path weakness when combined with OpenScape Fusion for MS Office during startup. The vulnerability takes advantage of a flaw in how Windows handles unquoted paths. Attackers with write access to the C:\ directory can plant malicious files that execute with elevated privileges, allowing them to bypass User Account Control and escalate privileges. As OpenScape Fusion launches Plantronics Hub, the malicious code is executed, leading to privilege escalation. HP has not released a patch but recommends quoting the registry path and restricting write permissions to the C:\ directory as mitigation strategies.