CVE-2021-34571

low-risk
Published 2021-09-16

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.

Do I need to act?

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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
ADJACENT_NETWORK / LOW complexity

Affected Products (1)

Ewm

Affected Vendors

Enbra

References (2)

Third Party Advisory https://www.fit.vutbr.cz/~polcak/CVE-2021-34571.en
Third Party Advisory https://www.fit.vutbr.cz/~polcak/CVE-2021-34571.en
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal