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

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.

Published Jun 25, 2021Updated Sep 16, 2024Sources: cvelistV5, CERTVDE

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Unreported

no source claims exploitation

EPSS

chance of exploitation in 30 days

Affects

weidm ller

2 products listed

CVSS base

7.2

HIGH

Affected scope

The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.

Vendors (1)

weidm ller

Products (2)

ie wl t bl ap cl xxie wl t vl ap cl xx

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Source
7.2	CVSS 3.1	HIGH	—	—	cvelistV5

Weakness & attack patterns

CWE-287

Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.

T1548Abuse Elevation Control Mechanism
T1040Network Sniffing
T1185Browser Session Hijacking

References

1 on the record

cert.vde.com/en-us/advisories/vde-2021-026
x_refsource_CONFIRM

Elsewhere on this site

weidm llerevery CVE for this vendor
CWE-287other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.