What’s Vulnerable › Vulnerabilities

CVE-2021-33538: WEIDMUELLER: WLAN devices affected by improper access control vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-25 · updated 2026-06-17
• Weakness: CWE-269

Description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable improper access control vulnerability exists in the iw_webs account settings functionality. A specially crafted user name entry can cause the overwrite of an existing user account password, resulting in remote shell access to the device as that user. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Affected products

• Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Eu Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Us Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wlt-Bl-Ap-Cl-Us Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wlt-Vl-Ap-Br-Cl-Eu Firmware: through 1.16.18; through 1.11.10
• Weidmueller Ie-Wlt-Vl-Ap-Br-Cl-Us Firmware: through 1.16.18; through 1.11.10

References

• https://cert.vde.com/en-us/advisories/vde-2021-026
• https://cert.vde.com/en-us/advisories/vde-2021-026

Get alerted when CVE-2021-33538 or the next vulnerability affects your stack