CVE-2021-33531

Name: CVE-2021-33531
Creator: NVD / NIST
Published: 2021-06-25T19:15:09.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.72%

Last modified Jun 17, 2026

CVE-2021-33531 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.72%

49.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Weidmueller	Ie-Wl-Bl-Ap-Cl-Eu Firmware	<= 1.16.18
Weidmueller	Ie-Wlt-Bl-Ap-Cl-Eu Firmware	<= 1.16.18
Weidmueller	Ie-Wl-Bl-Ap-Cl-Us Firmware	<= 1.16.18
Weidmueller	Ie-Wlt-Bl-Ap-Cl-Us Firmware	<= 1.16.18
Weidmueller	Ie-Wl-Vl-Ap-Br-Cl-Eu Firmware	<= 1.16.18
Weidmueller	Ie-Wlt-Vl-Ap-Br-Cl-Eu Firmware	<= 1.16.18
Weidmueller	Ie-Wl-Vl-Ap-Br-Cl-Us Firmware	<= 1.16.18
Weidmueller	Ie-Wlt-Vl-Ap-Br-Cl-Us Firmware	<= 1.16.18
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

References

https://cert.vde.com/en-us/advisories/vde-2021-026Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2021-026Third Party Advisory

Timeline

Published: Jun 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33531?

How severe is CVE-2021-33531?

CVE-2021-33531 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33531?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33531?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST