CVE-2021-34561: Pepperl-Fuchs Wha-Gw-f2d2-0-As-z2-Eth.eip Firmware

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 serious issue exists, if the application is not externally accessible or uses IP-based access restrictions. Attackers can use DNS Rebinding to bypass any IP or firewall based access restrictions that may be in place, by proxying through their target's browser.

Affected products

• Pepperl-Fuchs Wha-Gw-f2d2-0-As-z2-Eth.eip Firmware: up to and including 3.0.8
• Pepperl-Fuchs Wha-Gw-f2d2-0-As-z2-Eth Firmware: up to and including 3.0.8

Published 2021-08-31. Last modified 2026-06-17.