CVE-2020-7357Cayin CMS Command Injection
- 9.6CriticalCVSS base score
- 32.1%Exploitation in 30 daysEPSS · top 1.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module for it.
Show the exploits1
Metasploit modules1 module
- Cayin CMS NTP Server RCE (Metasploit module) (opens in a new tab)
exploit/linux/http/cayin_cms_ntpRank excellentdisclosed 4 Jun 2020
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By rapid7
- 7 months later
· 7 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| rapid7CNA (assigner) | 3.1 | Critical9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Critical9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 32.1% · top 1.7% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.6.
Affected products
Cayin Technology · Cayin CMS-SE
- affected 11.0 Build 19179 – ≤ 11.0 Build 19179
Cayin Technology · Cayin CMS-60
- affected 11.0 Build 19025 – ≤ 11.0 Build 19025
Cayin Technology · Cayin CMS-40
- affected 9.0 Build 14917 – ≤ 9.0 Build 14917
Cayin Technology · Cayin CMS-20
- affected 9.0 Build 14917 – ≤ 9.0 Build 14917
- affected 8.2 Build 12199
- affected 8.0 Build 11175
- affected 7.5 Build 11175
References
References3
- https://github.com/rapid7/metasploit-framework/pull/13607 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5570.php (opens in a new tab)x_refsource_MISCx_transferred
- https://exchange.xforce.ibmcloud.com/vulnerabilities/182925 (opens in a new tab)vendor-advisoryx_refsource_IBMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-28484 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-7357)Record last updated .