ICS Advisories

Risk evaluation

Multiple issues in Weidmueller Industrial WLAN devices have been found. Initial publication date: 2021-06-23 Update A publication date: 2021-07-02 Update A CVE-2021-33534 CVSS: 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H) Description: An exploitable command injection vulnerability exists in the hostname functionality of Weidmueller Industrial WLAN devices. 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.

Mitigation summary

For all potential vulnerabilities, customers can download a patched firmware to secure their Industrial WLAN devices properly. Please follow the procedure below to download and install the latest firmware for your device: 1. Use the link: [www.weidmueller.com](www.weidmueller.com) 2. Enter the product number of the Industrial WLAN device you want to update in the search field on the webpage and press "Enter". 3. On the next page, expand the drop-down menu **"Downloads"**. 4. Download the respective firmware from the download table. 5. Install the firmware on your device. Patched firmware versions for all affected products | Product number | Product name | Firmware version | |---------------|-----------------------------------|------------------------------------------| | 2536600000 | IE-WL-BL-AP-CL-EU | <= V1.16.21 (Build 21010513) | | 2536650000 | IE-WLT-BL-AP-CL-EU | <= V1.16.21 (Build 21010513) | | 2536660000 | IE-WL-BL-AP-CL-US | <= V1.16.21 (Build 21010513) | | 2536670000 | IE-WLT-BL-AP-CL-US | <= V1.16.21 (Build 21010513) | | 2536680000 | IE-WL-VL-AP-BR-CL-EU | <= V1.11.13 (Build 21010513) | | 2536690000 | IE-WLT-VL-AP-BR-CL-EU | <= V1.11.13 (Build 21010513) | | 2536700000 | IE-WL-VL-AP-BR-CL-US | <= V1.11.13 (Build 21010513) | | 2536710000 | IE-WLT-VL-AP-BR-CL-US | <= V1.11.13 (Build 21010513) | If a firmware update is available for your device, please follow the steps above to install it.