What’s Vulnerable › Vulnerabilities

CVE-2022-28005

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-06 · updated 2026-06-17
• Weakness: CWE-522

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.

Affected products

• 3CX: through 18.0.3.450

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/
• https://www.3cx.com/blog/releases/v18-security-hotfix/
• https://www.3cx.com/blog/releases/v18-update-3-final/
• https://medium.com/%40frycos/pwning-3cx-phone-management-backends-from-the-internet-d0096339dd88
• https://www.3cx.com/blog/change-log/phone-system-change-log/
• https://www.3cx.com/blog/releases/v18-security-hotfix/
• https://www.3cx.com/blog/releases/v18-update-3-final/

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