CVE-2016-20034Wowza 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.
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.0 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-352
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wowza streaming_engine wowza:streaming_engine | 4.5.0 | NVD |
References
- http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5340.phpexploit, third-party-advisory
- https://www.exploit-db.com/exploits/40133exploit, third-party-advisory, vdb-entry
- https://www.vulncheck.com/advisories/wowza-streaming-engine-privilege-escalation-via-user-editthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.