Threatline

Grandstream GXP1600 VoIP Phones Exposed to Unauthenticated Remote Code Execution

Cybersecurity researchers have disclosed a critical security flaw in the Grandstream GXP1600 series of VoIP phones that could allow an attacker to seize control of susceptible devices. The vulnerability, tracked as CVE-2026-2329, carries a CVSS score of 9.3 out of a maximum of 10.0. It has been described as a case of unauthenticated stack-based buffer overflow that could result in remote code