CVE-2023-37857: Phoenixcontact Wp 6070-Wvps Firmware

High severity, CVSS 7.2. EPSS: 0.6% chance of exploitation in the next 30 days.

In PHOENIX CONTACTs WP 6xxx series web panels in versions prior to 4.0.10 an authenticated, remote attacker with admin privileges is able to read hardcoded cryptographic keys allowing the attacker to create valid session cookies. These session-cookies created by the attacker are not sufficient to obtain a valid session on the device.

Affected products

• Phoenixcontact Wp 6070-Wvps Firmware: before 4.0.10 (fixed in 4.0.10)
• Phoenixcontact Wp 6101-Wxps Firmware: before 4.0.10 (fixed in 4.0.10)
• Phoenixcontact Wp 6121-Wxps Firmware: before 4.0.10 (fixed in 4.0.10)
• Phoenixcontact Wp 6156-Whps Firmware: before 4.0.10 (fixed in 4.0.10)
• Phoenixcontact Wp 6185-Whps Firmware: before 4.0.10 (fixed in 4.0.10)
• Phoenixcontact Wp 6215-Whps Firmware: before 4.0.10 (fixed in 4.0.10)

Published 2023-08-09. Last modified 2026-06-17.