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TI-2021-11661 Aliases CVE-2021-31540GHSA-8h36-wvg6-2pj9

Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file…

Priority LOW 31CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.

Why it matters now

EPSS 0.00389 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wowza:streaming_engine:*:*:*:*:*:*:*:*up to 4.8.5VulnerableWowza
  • cpe:2.3:a:wowza:streaming_engine:*:*:*:*:*:*:*:* Versions up to 4.8.5 Vulnerable ·Wowza

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-31540
  2. 2026-10-03 Alias added: GHSA-8h36-wvg6-2pj9

References

Exploit 1

Advisory 2

  • TI-2016-09210 Wowza Streaming Engine 4.5.0 Privilege Escalation via user edit CVSS 4.0HIGH 8.7
  • TI-2016-09209 Wowza Streaming Engine 4.5.0 Local Privilege Escalation via nssm_x64.exe CVSS 4.0HIGH 8.5
  • TI-2016-09211 Wowza Streaming Engine 4.5.0 CSRF via user edit endpoint CVSS 4.0MEDIUM 6.9
  • TI-2018-13723 The REST API in Wowza Streaming Engine 4.7.4.01 allows traversal of the directory… CVSS 3.1CRITICAL 9.1
  • TI-2016-09212 Wowza Streaming Engine 4.5.0 Multiple Cross-Site Scripting Vulnerabilities CVSS 4.0MEDIUM 5.1
  • TI-2018-05112 An issue was discovered in the MBeans Server in Wowza Streaming Engine before 4.7.1. CVSS 3.0CRITICAL 9.8
See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences