CVE-2019-7656: Wowza Streaming Engine

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A privilege escalation vulnerability in Wowza Streaming Engine 4.8.0 and earlier allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse. This issue was resolved in Wowza Streaming Engine 4.8.5.

Affected products

• Wowza Streaming Engine: up to and including 4.8.0

Published 2020-01-29. Last modified 2026-06-17.