All Utoolity Data Center and Server apps use the SLF4J facade as provided by the respective Atlassian host product via OSGi and do not introduce Log4j on their own. They would thus only be indirectly affected if the Atlassian host product uses a vulnerable version of Log4j – this does not seem to be the case by default, refer to https://confluence.atlassian.com/kb/faq-for-cve-2021-44228-1103069406.html for details.
All Utoolity Cloud apps do not use Log4j and are thus not affected.
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