{"id":"CVE-2021-34573","aliases":["EUVD-2021-21223","GHSA-p35r-5hv5-759h"],"status":"published","title":"Incorrect calculation in Enbra EWM does not report backflows or no flow events","description":"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.","severity":{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00226,"percentile":0.13467,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-682"],"published":"2021-09-16T12:20:18Z","modified":"2026-06-17T03:56:09Z","products":[{"vendor":"enbra","product":"at-wmbus-16-2"},{"vendor":"enbra","product":"er-am dn 15"},{"vendor":"enbra","product":"ewm"},{"vendor":"enbra","product":"ewm 1.7.29"}],"references":[{"url":"https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34573"},{"url":"https://github.com/advisories/GHSA-p35r-5hv5-759h"}],"sources":{"cve":[{"id":"CVE-2021-34573","title":"Incorrect calculation in Enbra EWM does not report backflows or no flow events","description":"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.","status":"published","published":"2021-09-16T12:20:18.226Z","modified":"2024-09-17T02:21:48.549Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-682"],"updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-21223","description":"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.","status":"published","published":"2021-09-16T12:20:18Z","modified":"2024-09-17T02:21:48Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T00:28:40.896027Z"}],"ghsa":[{"id":"GHSA-p35r-5hv5-759h","title":"In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events...","description":"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.","status":"published","published":"2022-05-24T19:14:51Z","modified":"2023-01-30T05:02:15Z","cwes":["CWE-682"],"updated_at":"2026-11-02T14:46:35.666418Z"}],"nvd":[{"id":"CVE-2021-34573","description":"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.","status":"published","published":"2021-09-16T13:15:14.557Z","modified":"2026-06-17T03:56:09.273Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-682"],"updated_at":"2026-11-02T14:06:58.502206Z"}]}}