{"id":"CVE-2021-43405","details":"An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).","modified":"2026-07-08T06:00:45.987107441Z","published":"2021-11-05T18:15:09.547Z","database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:a:fusionpbx:fusionpbx:*:*:*:*:*:*:*:*"],"extracted_events":[{"fixed":"4.5.30"}],"source":"CPE_RANGE","vendor_product":"fusionpbx:fusionpbx"},{"source":"DESCRIPTION","extracted_events":[{"fixed":"4.5.30"}]}]},"references":[{"type":"FIX","url":"https://github.com/fusionpbx/fusionpbx/commit/2d2869c1a1e874c46a8c3c5475614ce769bbbd59"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/164795/FusionPBX-4.5.29-Remote-Code-Execution.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/fusionpbx/fusionpbx","events":[{"introduced":"0"},{"fixed":"2d2869c1a1e874c46a8c3c5475614ce769bbbd59"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43405.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}