Many VIOM patches include a new version of Apache Tomcat software in order to address ongoing security vulnerabilities.
Once a VIOM patch has been applied, the Apache Tomcat version can be determined in several ways, e.g. from the VIOM Management Server:
# /opt/VRTSsfmcs/webgui/tomcat/lib/java -cp catalina.jar org.apache.catalina.util.ServerInfo
Server version: Apache Tomcat/9.0.54
Server built: Sep 28 2021 13:51:49 UTC
Server number: 9.0.54.0
OS Name: Linux
OS Version: 3.10.0-1160.76.1.el7.x86_64
Architecture: amd64
JVM Version: 1.8.0_262-b10
JVM Vendor: Oracle Corporation
or
# grep Version /opt/VRTSsfmcs/webgui/tomcat/webapps/ROOT/RELEASE-NOTES.txt
The ASF licenses this file to You under the Apache License, Version 2.0
Apache Tomcat Version 9.0.54
i.e. 9.0.54.0 Version is running in this example