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HIGH · 7.2

CVE-2021-33539

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 d...

Vulnerability 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.

CVSS Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
WeidmuellerIe-Wl-Bl-Ap-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wl-Bl-Ap-Cl-Eu-
WeidmuellerIe-Wlt-Bl-Ap-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wlt-Bl-Ap-Cl-Eu-
WeidmuellerIe-Wl-Bl-Ap-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wl-Bl-Ap-Cl-Us-
WeidmuellerIe-Wlt-Bl-Ap-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wlt-Bl-Ap-Cl-Us-
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Eu-
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Eu-
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Us-
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Us-

Related Weaknesses (CWE)

CWE-287

References

FAQ

What is CVE-2021-33539?

CVE-2021-33539 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 d...

How severe is CVE-2021-33539?

CVE-2021-33539 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33539?

Check the references section above for vendor advisories and patch information. Affected products include: Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wl-Bl-Ap-Cl-Eu, Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu, Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware.