Wowza Streaming Engine 4.9.5 has been released

Hello everybody,

Please find below the release notes for version 4.9.5 of the Wowza Streaming Engine software.

The following changes were made since the release of version 4.9.4:

  • Updated the Wowza Streaming Engine Transcoder library to use MainConcept SDK version 15.4.
  • Added support for ARM-based executables to install and update Wowza Streaming Engine in Linux environments.
  • Added an RTSPSsrcCheck property to use inside the Application.xml > RTP element that can be set to false to disable SSRC checks when streaming over RTSP.
  • Fixed CVE-2025-22235 security vulnerability by upgrading to Spring Boot (org.springframework.boot) 3.3.11.
  • Fixed CVE-2024-13009 security vulnerability by upgrading jetty-http, jetty-server, jetty-io, and jetty-util libraries to 9.4.57.v20241219.
  • Fixed CVE-2025-48988 security vulnerability by upgrading Apache Tomcat libraries to 10.1.42.
  • Fixed an issue causing an error during server shutdowns when the SRTListener property is removed from the VHost.xml.
  • Fixed an issue related to existing multiple log4j-core JAR files that were causing Wowza Streaming Engine to stop unexpectedly during upgrades from 4.9.2 to 4.9.4 on Windows.
  • Fixed an issue causing invalid connections and errors when pushing RTSP streams over TCP from IP cameras to Wowza Streaming Engine 4.8.8.01 and later.
  • Fixed an issue logging zero-sized function error counts and causing crashes when dropping RTMP connections sending corrupt data.
  • Fixed an issue causing HTTP headers to be corrupted or missing when HTTP/2 is enabled and when running CMAF with Low-Latency HLS (LL-HLS) streams.
  • Fixed an issue causing frame jittering in video outputs when using NVIDIA GPU transcoding in Wowza Streaming Engine 4.9.3 and later.