Unrated severityNVD Advisory· Published Mar 15, 2026· Updated Mar 16, 2026
Wowza Streaming Engine 4.5.0 Local Privilege Escalation via nssm_x64.exe
CVE-2016-20033
Description
Wowza Streaming Engine 4.5.0 contains a local privilege escalation vulnerability that allows authenticated users to escalate privileges by replacing executable files due to improper file permissions granting full access to the Everyone group. Attackers can replace the nssm_x64.exe binary in the manager and engine service directories with malicious executables to execute code with LocalSystem privileges when services restart.
Affected products
2- Range: = 4.5.0
- Wowza Media Systems, LLC./Wowza Streaming Enginev5Range: 4.5.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- www.exploit-db.com/exploits/40132mitreexploit
- www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5339.phpmitrevendor-advisory
- www.vulncheck.com/advisories/wowza-streaming-engine-local-privilege-escalation-via-nssm-x64-exemitrethird-party-advisory
News mentions
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