CVE-2017-16723: Phoenixcontact Fl Com Server RS232 Firmware

Medium severity, CVSS 6.1. EPSS: 2.2% chance of exploitation in the next 30 days.

A Cross-site Scripting issue was discovered in PHOENIX CONTACT FL COMSERVER BASIC 232/422/485, FL COMSERVER UNI 232/422/485, FL COMSERVER BAS 232/422/485-T, FL COMSERVER UNI 232/422/485-T, FL COM SERVER RS232, FL COM SERVER RS485, and PSI-MODEM/ETH (running firmware versions prior to 1.99, 2.20, or 2.40). The cross-site scripting vulnerability has been identified, which may allow remote code execution.

Affected products

• Phoenixcontact Fl Com Server RS232 Firmware: version 1.99 only
• Phoenixcontact Fl Com Server RS485 Firmware: version 1.99 only
• Phoenixcontact Fl Comserver Bas 232 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Bas 422 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Bas 485-T Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Basic 232 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Basic 422 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Basic 485 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Uni 232 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Uni 422 Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Uni 485-T Firmware: version 2.40 only
• Phoenixcontact Fl Comserver Uni 485 Firmware: version 2.40 only
• Phoenixcontact Psi-Modem/eth Firmware: version 2.20 only

Published 2017-12-11. Last modified 2026-06-17.