{"id":"CVE-2023-39979","aliases":["EUVD-2023-43672","GHSA-vv74-p9wh-mpf3"],"status":"published","title":"MXsecurity Authentication Bypass","description":"There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote attacker might access the system if the web service authenticator has insufficient random values.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00982,"percentile":0.62713,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-330","CWE-334"],"published":"2023-09-02T12:05:48Z","modified":"2026-06-17T06:13:04Z","products":[{"vendor":"moxa","product":"mxsecurity"},{"vendor":"moxa","product":"mxsecurity series"}],"references":[{"url":"https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230403-mxsecurity-series-multiple-vulnerabilities","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39979"},{"url":"https://github.com/advisories/GHSA-vv74-p9wh-mpf3"}],"sources":{"cve":[{"id":"CVE-2023-39979","title":"MXsecurity Authentication Bypass","description":"There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote attacker might access the system if the web service authenticator has insufficient random values.  \n\n","status":"published","published":"2023-09-02T12:05:48.829Z","modified":"2024-09-30T20:18:16.494Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-334"],"updated_at":"2026-11-02T14:35:33.462059Z"}],"euvd":[{"id":"EUVD-2023-43672","description":"There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote attacker might access the system if the web service authenticator has insufficient random values.  \n\n","status":"published","published":"2023-09-02T12:05:48Z","modified":"2024-09-30T20:18:16Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:28:01.909154Z"}],"ghsa":[{"id":"GHSA-vv74-p9wh-mpf3","title":"There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass...","description":"There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote attacker might access the system if the web service authenticator has insufficient random values.  \n\n","status":"published","published":"2023-09-02T15:30:18Z","modified":"2024-04-04T07:22:20Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-330","CWE-334"],"updated_at":"2026-11-02T14:56:50.902062Z"}],"nvd":[{"id":"CVE-2023-39979","description":"There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote attacker might access the system if the web service authenticator has insufficient random values.  \n\n","status":"published","published":"2023-09-02T13:15:44.733Z","modified":"2026-06-17T06:13:04.73Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-334","CWE-330"],"updated_at":"2026-11-02T14:08:27.181588Z"}]}}