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Vulnerability · Published Jun 25, 2021 · Assigned by CERTVDE

CVE-2021-33539WEIDMUELLER: WLAN devices affected by authentication bypass vulnerability

High 7.2

In plain English

A high-severity improper authentication in IE-WL(T)-BL-AP-CL-XX from Weidmüller. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High
Exploit odds (30 days)1.1%top 35.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable authentication bypass vulnerability exists in the hostname processing. A specially configured device hostname can cause the device to interpret selected remote traffic as local traffic, resulting in a bypass of web authentication. An attacker can send authenticated SNMP requests to trigger this vulnerability.

Affected products (as reported)

VendorProductVersions
Weidmüller IE-WL(T)-BL-AP-CL-XX IE-WL-BL-AP-CL-EU (2536600000) – through V1.16.18 (Build 18081617)IE-WLT-BL-AP-CL-EU (2536650000) – through V1.16.18 (Build 18081617)IE-WL-BL-AP-CL-US (2536660000) – through V1.16.18 (Build 18081617)IE-WLT-BL-AP-CL-US (2536670000) – through V1.16.18 (Build 18081617)
Weidmüller IE-WL(T)-VL-AP-CL-XX IE-WL-VL-AP-BR-CL-EU (2536680000) – through V1.11.10 (Build 18122616)IE-WLT-VL-AP-BR-CL-EU (2536690000) – through V1.11.10 (Build 18122616)IE-WL-VL-AP-BR-CL-US (2536700000) – through V1.11.10 (Build 18122616)IE-WLT-VL-AP-BR-CL-US (2536710000) – through V1.11.10 (Build 18122616)

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References