{"id":"CVE-2021-43405","aliases":["EUVD-2021-30340","GHSA-42c2-hjwj-v6gj"],"status":"published","title":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters ...","description":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.35628,"percentile":0.98479,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2021-11-05T17:36:23Z","modified":"2026-10-20T10:54:07Z","exploits":[{"source":"exploitdb","id":"EDB-50505","title":"FusionPBX 4.5.29 - Remote Code Execution (RCE) (Authenticated)","type":"webapps","platform":"php","date":"2021-11-08","url":"https://www.exploit-db.com/exploits/50505"}],"products":[{"vendor":"fusionpbx","product":"fusionpbx"}],"references":[{"url":"https://github.com/fusionpbx/fusionpbx/commit/2d2869c1a1e874c46a8c3c5475614ce769bbbd59","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"http://packetstormsecurity.com/files/164795/FusionPBX-4.5.29-Remote-Code-Execution.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43405"},{"url":"https://github.com/advisories/GHSA-42c2-hjwj-v6gj"}],"sources":{"cve":[{"id":"CVE-2021-43405","description":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","status":"published","published":"2021-11-05T17:36:23Z","modified":"2024-08-04T03:55:28.86Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-30340","description":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","status":"published","published":"2021-11-05T17:36:23Z","modified":"2024-08-04T03:55:28Z","updated_at":"2026-11-03T03:24:14.245608Z"}],"ghsa":[{"id":"GHSA-42c2-hjwj-v6gj","title":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters ...","description":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","status":"published","published":"2022-05-24T19:19:48Z","modified":"2023-08-08T15:31:24Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:54:44.111289Z"}],"nvd":[{"id":"CVE-2021-43405","description":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","status":"published","published":"2021-11-05T18:15:09.547Z","modified":"2026-06-17T04:10:55.6Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:07:00.984108Z"}],"osv":[{"id":"CVE-2021-43405","description":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","status":"published","published":"2021-11-05T18:15:09.547Z","modified":"2026-10-20T10:54:07.994453056Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:21.877444Z"}]}}