{"id":"CVE-2021-34572","aliases":["EUVD-2021-21222","GHSA-7x8j-m6q2-x954"],"status":"published","title":"Insufficient Verification of Data Authenticity in Enbra EWM (replay attack)","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/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":0.00227,"percentile":0.13507,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-345"],"published":"2021-09-16T12:20:16Z","modified":"2026-06-17T03:56:09Z","products":[{"vendor":"enbra","product":"ewm"},{"vendor":"enbra","product":"ewm 1.7.29"}],"references":[{"url":"https://www.fit.vutbr.cz/~polcak/CVE-2021-34572.en","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34572"},{"url":"https://github.com/advisories/GHSA-7x8j-m6q2-x954"}],"sources":{"cve":[{"id":"CVE-2021-34572","title":"Insufficient Verification of Data Authenticity in Enbra EWM (replay attack)","description":"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.","status":"published","published":"2021-09-16T12:20:16.725Z","modified":"2024-09-16T17:23:17.59Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-21222","description":"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.","status":"published","published":"2021-09-16T12:20:16Z","modified":"2024-09-16T17:23:17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T00:55:42.486621Z"}],"ghsa":[{"id":"GHSA-7x8j-m6q2-x954","title":"Enbra EWM 1.7.29 does not check for or detect replay attacks sent by wireless M-Bus Security mode...","description":"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.","status":"published","published":"2022-05-24T19:14:51Z","modified":"2023-01-30T05:02:15Z","cwes":["CWE-345"],"updated_at":"2026-11-02T14:46:35.666418Z"}],"nvd":[{"id":"CVE-2021-34572","description":"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.","status":"published","published":"2021-09-16T13:15:14.31Z","modified":"2026-06-17T03:56:09.17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.3,"vector":"AV:A/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:06:58.502206Z"}]}}