The APDFL.dll contains a stack-based buffer overflow vulnerability that could be triggered while parsing specially crafted PDF files. This could allow an attacker to execute code in the context of the current process.
https://www.cisa.gov/uscert/ics/advisories/icsa-22-349-15
https://cert-portal.siemens.com/productcert/html/ssa-360681.html
https://cert-portal.siemens.com/productcert/csaf/ssa-360681.json