CVE-2016-20034 HIGH

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

Vendor Wowza Media Systems, Llc.

Product Wowza Streaming Engine

Weakness CWE-352 · CSRF

Published March 15, 2026

Last update March 16, 2026

View on NVD All CVEs

CVSS base score

8.7/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 15, 2026 CVE published

March 16, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2016-20034 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/352.html

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