{"cve":"CVE-2020-21055","nvd":{"published":"2021-05-20T16:15:07.800","modified":"2026-06-17T03:03:31.747","status":"Modified","description":"A Directory Traversal vulnerability exists in FusionPBX 4.5.7 allows malicoius users to rename any file of the system.via the (1) folder, (2) filename, and (3) newfilename variables in app\\edit\\filerename.php.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-22"],"references":["https://github.com/fusionpbx/fusionpbx/commit/1a88ca61a744914d3336cc15a40fb3edbcde9085","https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-6/","https://github.com/fusionpbx/fusionpbx/commit/1a88ca61a744914d3336cc15a40fb3edbcde9085","https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-6/"],"products":["fusionpbx:fusionpbx"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2020-21055","score":0.0118,"percentile":0.67701,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}