CVE-2021-20999

WEIDMUELLER: Accidentally open network port in u-controls and IoT-Gateways

Description

In Weidmüller u-controls and IoT-Gateways in versions up to 1.12.1 a network port intended only for device-internal usage is accidentally accessible via external network interfaces. By exploiting this vulnerability the device may be manipulated or the operation may be stopped.

Remediation

Solution:

  • Weidmüller recommends upgrading affected devices to the current firmware version 1.12.3 or higher which fixes this vulnerability.

Workaround:

  • Restrict access to the network the device is connected to. Do not directly connect the device to the internet.

Category

9.4
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.40%
Third-Party Advisory vde.com
Affected: Weidmüller UC20-WL2000-AC (No. 1334950000)
Affected: Weidmüller UC20-WL2000-IOT (No. 1334990000)
Affected: Weidmüller IOT-GW30 (No. 2682620000)
Affected: Weidmüller IOT-GW30-4G-EU (No. 2682630000)
Published at:
Updated at:

References

Link Tags
https://cert.vde.com/en-us/advisories/vde-2021-016 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20999?
CVE-2021-20999 has been scored as a critical severity vulnerability.
How to fix CVE-2021-20999?
To fix CVE-2021-20999: Weidmüller recommends upgrading affected devices to the current firmware version 1.12.3 or higher which fixes this vulnerability.
Is CVE-2021-20999 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20999 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20999?
CVE-2021-20999 affects Weidmüller UC20-WL2000-AC (No. 1334950000), Weidmüller UC20-WL2000-IOT (No. 1334990000), Weidmüller IOT-GW30 (No. 2682620000), Weidmüller IOT-GW30-4G-EU (No. 2682630000).
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