CVE-2022-28005
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.35% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-522
- Affected
- 3cx/3cx
- Source
- cve@mitre.org
EPSS moved from 8.3% on 6 October 2026 to 8.3% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://medium.com/%40frycos/pwning-3cx-phone-management-backends-from-the-internet-d0096339dd88
- https://www.3cx.com/blog/change-log/phone-system-change-log/Release Notes, Vendor Advisory
- https://www.3cx.com/blog/releases/v18-security-hotfix/Release Notes, Vendor Advisory
- https://www.3cx.com/blog/releases/v18-update-3-final/Release Notes, Vendor Advisory
- https://medium.com/%40frycos/pwning-3cx-phone-management-backends-from-the-internet-d0096339dd88
- https://www.3cx.com/blog/change-log/phone-system-change-log/Release Notes, Vendor Advisory
- https://www.3cx.com/blog/releases/v18-security-hotfix/Release Notes, Vendor Advisory
- https://www.3cx.com/blog/releases/v18-update-3-final/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.