CVE-2021-34571

Hard-coded Credentials in Enbra Wireless M-Bus devices

Description

Multiple Wireless M-Bus devices by Enbra use Hard-coded Credentials in Security mode 5 without an option to change the encryption key. An adversary can learn all information that is available in Enbra EWM.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Third-Party Advisory vutbr.cz
Affected: Enbra AT-WMBUS-16-2
Affected: Enbra ER-AM DN 15
Affected: Enbra EWM 1.7.29
Published at:
Updated at:

References

Link Tags
https://www.fit.vutbr.cz/~polcak/CVE-2021-34571.en third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-34571?
CVE-2021-34571 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34571?
To fix CVE-2021-34571, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34571 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34571 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-2021-34571?
CVE-2021-34571 affects Enbra AT-WMBUS-16-2, Enbra ER-AM DN 15, Enbra EWM 1.7.29.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.