Active Exploitation of Sangoma Switchvox Flaw Enables Reverse Shell Attacks
Attackers are actively exploiting CVE-2026-9586, an unauthenticated SQL injection vulnerability in Sangoma Switchvox VoIP platforms that enables remote code execution. Horizon3 researchers discovered this critical flaw among 12 vulnerabilities reported in April 2026, with Sangoma releasing patches in July. Since August 2026, threat actors have systematically targeted the approximately 4,000 internet-exposed Switchvox systems, deploying reverse shells to establish persistent access and exfiltrate system information to remote command-and-control servers. This incident exemplifies the growing threat landscape targeting enterprise communication infrastructure, where VoIP systems have become prime targets for attackers seeking to establish footholds in corporate networks and potentially intercept sensitive communications.
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