CVE-2022-28005: 3cx

Critical severity, CVSS 9.8. EPSS: 8.3% chance of exploitation in the next 30 days.

An issue was discovered in the 3CX Phone System Management Console prior to version 18 Update 3 FINAL. An unauthenticated attacker could abuse improperly secured access to arbitrary files on the server (via /Electron/download directory traversal in conjunction with a path component that uses backslash characters), leading to cleartext credential disclosure. Afterwards, the authenticated attacker is able to upload a file that overwrites a 3CX service binary, leading to Remote Code Execution as NT AUTHORITY\SYSTEM on Windows installations. NOTE: this issue exists because of an incomplete fix for CVE-2022-48482.

Affected products

• 3cx 3cx: up to and including 18.0.3.450

Published 2022-05-06. Last modified 2026-06-17.