CVE-2020-7357CMS OS Command Injection
Cayin CMS suffers from an authenticated OS semi-blind command injection vulnerability using default credentials.
Published Aug 6, 2020 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2020-7357 is a critical-severity vulnerability (CVSS 9.9 v3.1) affecting CMS-20 Firmware (Cayintech), CMS-40 Firmware (Cayintech), CMS-60 Firmware (Cayintech) and 8 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 32% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
32%
Higher than 98.3% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
51/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
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.
Affected Products
18 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| CMS-20 FirmwareCayintech | 9.0-14092, 9.0-14197 | n/a |
| CMS-40 FirmwareCayintech | 9.0-14093, 9.0-14197, 9.0-14199 | n/a |
| CMS-60 FirmwareCayintech | 11.0-19025 | n/a |
| CMSCayintech | 7.5-11175, 8.0-11175, 8.2-12199 | n/a |
| CMS-Se FirmwareCayintech | 11.0-18325, 11.0-19025, 11.0-19179 | n/a |
Timeline
Publicly disclosed
Aug 6, 2020
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
FAQ
Common Questions.
Cayin CMS suffers from an authenticated OS semi-blind command injection vulnerability using default credentials.
Affected: CMS-20 Firmware (Cayintech) versions 9.0-14092, 9.0-14197; CMS-40 Firmware (Cayintech) versions 9.0-14093, 9.0-14197, 9.0-14199; CMS-60 Firmware (Cayintech) versions 11.0-19025, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2020-7357 On Your Attack Surface?
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