critical
9
CWE
798
Advisory Published
Updated

CVE-2021-33531: WEIDMUELLER: WLAN devices affected by Hard-coded Credentials vulnerability

First published: Fri Jun 25 2021(Updated: )

In Weidmueller Industrial WLAN devices in multiple versions an exploitable use of hard-coded credentials vulnerability exists in multiple iw_* utilities. The device operating system contains an undocumented encryption password, allowing for the creation of custom diagnostic scripts. An attacker can send diagnostic scripts while authenticated as a low privilege user to trigger this vulnerability.

Credit: info@cert.vde.com

Affected SoftwareAffected VersionHow to fix
Weidmueller Ie-wl-bl-ap-cl-eu Firmware<=1.16.18
Weidmueller Ie-wl-bl-ap-cl-eu
Weidmueller Ie-wlt-bl-ap-cl-eu Firmware<=1.16.18
Weidmueller Ie-wlt-bl-ap-cl-eu
Weidmueller Ie-wl-bl-ap-cl-us Firmware<=1.16.18
Weidmueller Ie-wl-bl-ap-cl-us
Weidmueller Ie-wlt-bl-ap-cl-us Firmware<=1.16.18
Weidmueller Ie-wlt-bl-ap-cl-us
Weidmueller Ie-wl-vl-ap-br-cl-eu Firmware<=1.16.18
Weidmueller Ie-wl-vl-ap-br-cl-eu
Weidmueller Ie-wlt-vl-ap-br-cl-eu Firmware<=1.16.18
Weidmueller Ie-wlt-vl-ap-br-cl-eu
Weidmueller Ie-wl-vl-ap-br-cl-us Firmware<=1.16.18
Weidmueller Ie-wl-vl-ap-br-cl-us
Weidmueller Ie-wlt-vl-ap-br-cl-us Firmware<=1.16.18
Weidmueller Ie-wlt-vl-ap-br-cl-us
Weidmueller Ie-wl-bl-ap-cl-eu Firmware<=1.11.10
Weidmueller Ie-wlt-bl-ap-cl-eu Firmware<=1.11.10
Weidmueller Ie-wl-bl-ap-cl-us Firmware<=1.11.10
Weidmueller Ie-wlt-bl-ap-cl-us Firmware<=1.11.10
Weidmueller Ie-wl-vl-ap-br-cl-eu Firmware<=1.11.10
Weidmueller Ie-wlt-vl-ap-br-cl-eu Firmware<=1.11.10
Weidmueller Ie-wl-vl-ap-br-cl-us Firmware<=1.11.10
Weidmueller Ie-wlt-vl-ap-br-cl-us Firmware<=1.11.10

Remedy

For IE-WL(T)-BL-AP-CL-XX versions V1.16.21 (Build 21010513) and greater are fixed. For IE-WL(T)-VL-AP-CL-XX versions V1.11.13 (Build 21010513) and greater are fixed.

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-33531?

    CVE-2021-33531 is a vulnerability in Weidmueller Industrial WLAN devices that allows for the creation of custom diagnostic scripts using an undocumented encryption password.

  • How severe is CVE-2021-33531?

    CVE-2021-33531 is classified as a critical vulnerability with a severity score of 8.8.

  • Which software versions are affected by CVE-2021-33531?

    Multiple versions of Weidmueller Industrial WLAN devices firmware up to and including 1.16.18 are affected by CVE-2021-33531.

  • How can I fix CVE-2021-33531?

    There is currently no known fix for CVE-2021-33531. It is recommended to follow the vendor's advisories and apply any patches or updates as they become available.

  • Where can I find more information about CVE-2021-33531?

    You can find more information about CVE-2021-33531 on the VDE CERT website at the following link: https://cert.vde.com/en-us/advisories/vde-2021-026

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