Auth bypass in Weidmueller Ie-Wl-Bl-Ap-Cl-Eu
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 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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Weidmueller Ie-Wl-Bl-Ap-Cl-Eu
- Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware
- Weidmueller Ie-Wl-Bl-Ap-Cl-Us
- Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware
- Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu
- Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware
- Weidmueller Ie-Wlt-Bl-Ap-Cl-Us
- Weidmueller Ie-Wlt-Bl-Ap-Cl-Us Firmware
- Weidmueller Ie-Wlt-Vl-Ap-Br-Cl-Eu
- Weidmueller Ie-Wlt-Vl-Ap-Br-Cl-Eu Firmware
Weakness classification (CWE)
References
- cert.vde.com/en-us/advisories/vde-2021-026 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33539?
- CVE-2021-33539 is a high-severity vulnerability in Weidmueller Ie-Wl-Bl-Ap-Cl-Eu, classified under Improper Authentication. CVSS score: 7.2/10. Published 2021-06-25.
- How severe is CVE-2021-33539?
- High severity. CVSS v3 base score is 7.2 out of 10.