CVE-2021-34571 Hard-coded Credentials in Enbra Wireless M-Bus devices

Medium 6.5 Published Updated

Attackers can access sensitive data from Enbra Wireless M-Bus devices due to hard-coded credentials in Security mode 5.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-34571?

CVE-2021-34571 is a medium-severity vulnerability in Enbra AT-WMBUS-16-2, published on 16 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-798

Which versions are affected by CVE-2021-34571?

It affects 1 product.

Products include Enbra Ewm.

How do I fix CVE-2021-34571?

No fix has been published for CVE-2021-34571 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-34571 being exploited?

There is no known exploitation of CVE-2021-34571 in the wild and no public exploit code.

Sources

Also known as GHSA-mmrg-jwv9-9h53.

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