CVE-2020-7357: Cayintech CMS

Critical severity, CVSS 9.9. EPSS: 32.1% chance of exploitation in the next 30 days.

Cayin CMS suffers from an authenticated OS semi-blind command injection vulnerability using default credentials. This can be exploited to inject and execute arbitrary shell commands as the root user through the 'NTP_Server_IP' HTTP POST parameter in system.cgi page. This issue affects several branches and versions of the CMS application, including CME-SE, CMS-60, CMS-40, CMS-20, and CMS version 8.2, 8.0, and 7.5.

Affected products

• Cayintech CMS: version 7.5 only; version 8.0 only; version 8.2 only
• Cayintech CMS-20 Firmware: version 9.0 only
• Cayintech CMS-40 Firmware: version 9.0 only
• Cayintech CMS-60 Firmware: version 11.0 only
• Cayintech CMS-SE-Lxc Firmware: affected versions not specified
• Cayintech CMS-SE Firmware: version 11.0 only

Published 2020-08-06. Last modified 2026-06-17.