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

High 8.8 Published 25 Jun 2021 Updated 16 Sep 2024

Hard-coded credentials in Weidmüller Industrial WLAN devices allow low-privilege users to execute custom diagnostic scripts, potentially leading to privilege escalation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-33531?

CVE-2021-33531 is a high-severity vulnerability in Weidmüller IE-WL(T)-BL-AP-CL-XX, published on 25 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-798

Which versions are affected by CVE-2021-33531?

It affects 8 products.

Products include Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware, Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Eu Firmware, Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Us Firmware, Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wlt-Bl-Ap-Cl-Us Firmware and 2 more.

How do I fix CVE-2021-33531?

No fix has been published for CVE-2021-33531 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-33531 being exploited?

There is no known exploitation of CVE-2021-33531 in the wild and no public exploit code.

Sources

Also known as GHSA-523f-pwgc-24f9.