CVE-2021-33534: Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware

High severity, CVSS 7.2. EPSS: 2.1% chance of exploitation in the next 30 days.

In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the hostname functionality. A specially crafted entry to network configuration information can cause execution of arbitrary system commands, resulting in full control of the device. An attacker can send various requests while authenticated as a high privilege user to trigger this vulnerability.

Affected products

• Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Eu Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Us Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wlt-Bl-Ap-Cl-Us Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wlt-Vl-Ap-Br-Cl-Eu Firmware: up to and including 1.16.18; up to and including 1.11.10
• Weidmueller Ie-Wlt-Vl-Ap-Br-Cl-Us Firmware: up to and including 1.16.18; up to and including 1.11.10

Published 2021-06-25. Last modified 2026-06-17.