CVE-2021-33528 WEIDMUELLER: WLAN devices affected by privilege escalation vulnerability

High 8.8 Published 25 Jun 2021 Updated 16 Sep 2024

Authenticated low-privilege users can escape the restricted console to gain root access on Weidmüller Industrial WLAN devices.

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-2021-33528?

CVE-2021-33528 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 privilege escalation vulnerability exists in the iw_console functionality. A specially crafted menu selection string can cause an escape from the restricted console, resulting in system access as the root user. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Weakness: CWE-710

Which versions are affected by CVE-2021-33528?

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-2021-33528?

No fix has been published for CVE-2021-33528 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-33528 being exploited?

There is no known exploitation of CVE-2021-33528 in the wild and no public exploit code.

Sources

Also known as GHSA-q573-wgw4-2h26.