CVE-2021-35492: Wowza Streaming Engine

Medium severity, CVSS 6.5. EPSS: 3.3% chance of exploitation in the next 30 days.

Wowza Streaming Engine through 4.8.11+5 could allow an authenticated, remote attacker to exhaust filesystem resources via the /enginemanager/server/vhost/historical.jsdata vhost parameter. This is due to the insufficient management of available filesystem resources. An attacker could exploit this vulnerability through the Virtual Host Monitoring section by requesting random virtual-host historical data and exhausting available filesystem resources. A successful exploit could allow the attacker to cause database errors and cause the device to become unresponsive to web-based management. (Manual intervention is required to free filesystem resources and return the application to an operational state.)

Affected products

• Wowza Streaming Engine: up to and including 4.8.11

Published 2021-10-05. Last modified 2026-06-17.