Siemens SIMATIC RF6XXR UHF RFID devices prior to 3.2.1 are affected by mutiple attack vectors. Successful exploitation of these vulnerabilities could allow the transmission of plaintext data in various ways.
Binary data 720302.prm
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3389
www.us-cert.gov/ics/advisories/icsa-19-192-04