CVE-2021-34573 json
Incorrect calculation in Enbra EWM does not report backflows or no flow events
published 2021-09-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21223
- cvss
- 6.2
- 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
In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events backflow and "no flow" are not reconized or misinterpreted. This may lead to wrong values and missing events.
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 | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- Enbra AT-WMBUS-16-2
- Enbra ER-AM DN 15
- Enbra EWM 1.7.29
Classification
- Weakness
-
- CWE-682 Incorrect Calculation
References
-
fit.vutbr.cz
/~polcak/CVE-2021-34573.en
third-party-advisory
Sources
- CVE List CVE-2021-34573
- NVD CVE-2021-34573
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