{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.5.30"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.5.30"
              }
            ]
          }
        ]
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2d2869c1a1e874c46a8c3c5475614ce769bbbd59"
            }
          ],
          "repo": "https://github.com/fusionpbx/fusionpbx",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2d2869c1a1e874c46a8c3c5475614ce769bbbd59"
            }
          ],
          "repo": "https://github.com/fusionpbx/fusionpbx",
          "type": "GIT"
        }
      ]
    }
  ],
  "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).",
  "id": "CVE-2021-43405",
  "modified": "2026-03-13T21:50:09.494816228Z",
  "published": "2021-11-05T18:15:09.547Z",
  "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"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}