{"id":"CVE-2021-31987","aliases":["EUVD-2021-18859","GHSA-xpwh-c6wc-qg9f"],"status":"published","title":"A user controlled parameter related to SMTP test functionality is not correctly validated making...","description":"A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00894,"percentile":0.59908,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1286","CWE-20"],"published":"2021-10-05T21:46:45Z","modified":"2026-06-17T03:52:38Z","products":[{"vendor":"axis","product":"axis_os"},{"vendor":"axis","product":"axis_os_2016"},{"vendor":"axis","product":"axis_os_2018"},{"vendor":"axis","product":"axis_os_2020"},{"vendor":"axis communications ab","product":"axis os"}],"references":[{"url":"https://www.axis.com/files/tech_notes/CVE-2021-31987.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31987"},{"url":"https://github.com/advisories/GHSA-xpwh-c6wc-qg9f"}],"sources":{"cve":[{"id":"CVE-2021-31987","description":"A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.","status":"published","published":"2021-10-05T21:46:45Z","modified":"2024-11-08T08:20:22.238Z","cwes":["CWE-1286"],"updated_at":"2026-11-02T14:33:05.665371Z"}],"euvd":[{"id":"EUVD-2021-18859","description":"A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.","status":"published","published":"2021-10-05T21:46:45Z","modified":"2024-11-08T08:20:22Z","updated_at":"2026-11-03T00:05:06.878478Z"}],"ghsa":[{"id":"GHSA-xpwh-c6wc-qg9f","title":"A user controlled parameter related to SMTP test functionality is not correctly validated making...","description":"A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.","status":"published","published":"2022-05-24T19:16:50Z","modified":"2024-11-08T09:31:32Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20","CWE-1286"],"updated_at":"2026-11-02T14:58:46.386141Z"}],"nvd":[{"id":"CVE-2021-31987","description":"A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.","status":"published","published":"2021-10-05T22:15:07.887Z","modified":"2026-06-17T03:52:38.407Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.1,"vector":"AV:N/AC:H/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-1286"],"updated_at":"2026-11-02T14:06:59.314106Z"}]}}