CVE-2016-20034 Wowza Streaming Engine 4.5.0 Privilege Escalation via user edit

What is CVE-2016-20034?

CVE-2016-20034 is a high-severity vulnerability in Wowza Streaming Engine, published on 15 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Wowza Streaming Engine 4.5.0 contains a privilege escalation vulnerability that allows authenticated read-only users to elevate privileges to administrator by manipulating POST parameters. Attackers can send POST requests to the user edit endpoint with accessLevel set to 'admin' and advUser parameters set to 'true' and 'on' to gain administrative access.

Weakness: CWE-352

Which versions are affected by CVE-2016-20034?

It affects 1 product.

Products include Wowza Streaming Engine.

How do I fix CVE-2016-20034?

No fix has been published for CVE-2016-20034 yet. Limit exposure of the affected software until one is available.

Is CVE-2016-20034 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20034 exists.

Other vulnerabilities in Wowza Streaming Engine

• CVE-2018-7047 Hardcoded credentials in n/a Critical 9.8
• CVE-2024-52052 Stream Target Remote Code Execution in Wowza Streaming Engine Critical 9.4
• CVE-2018-19365 Path traversal in n/a Critical 9.1
• CVE-2020-9004 Auth bypass in n/a High 8.8
• CVE-2024-52053 Stored Cross-Site Scripting in Wowza Streaming Engine High 8.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6rxf-g628-g4p6.