Based on the description of CVE-2021-4041, it "only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default.".
More information can be seen here:
Broadcom Enterprise Software Security Advisory for Log4j 2 CVE-2021-44228 Vulnerability
Process Automation - All Supported versions.
Engineering team confirmed that JMSAppender is not configured or enabled by default in PAM, so it's not affected by this vulnerability.