CVE-2021-34572

low-risk
Published 2021-09-16

Enbra EWM 1.7.29 does not check for or detect replay attacks sent by wireless M-Bus Security mode 5 devices. Instead timestamps of the sensor are replaced by the time of the readout even if the data is a replay of earlier data.

Do I need to act?

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0.03% 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-2021-34572.en
Third Party Advisory https://www.fit.vutbr.cz/~polcak/CVE-2021-34572.en
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal