CVE-2021-34572 json
Insufficient Verification of Data Authenticity in Enbra EWM (replay attack)
published 2021-09-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21222
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- Enbra EWM 1.7.29
Classification
- Weakness
-
- CWE-345 Insufficient Verification of Data Authenticity
References
-
fit.vutbr.cz
/~polcak/CVE-2021-34572.en
third-party-advisory
Sources
- CVE List CVE-2021-34572
- NVD CVE-2021-34572
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