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CVE-2021-47745— Cypress Solutions CTM-200 2.7.1 Root Remote OS Command Injection via Firmware Upgrade

Quick assessment

Affected
Cypress 200
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cypress Solutions CTM-200是Cypress Solutions公司的一款无线网关。 Cypress Solutions CTM-200 2.7.1版本存在操作系统命令注入漏洞，该漏洞源于固件升级脚本fw_url参数存在经过身份验证的命令注入，可能导致远程攻击者以root权限执行shell命令。

CVSS 8.8 · High EPSS 1.33% · P70

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-47745

Vulnerability Information
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Vulnerability Title
Cypress Solutions CTM-200 2.7.1 Root Remote OS Command Injection via Firmware Upgrade
Source: CVE Program / CVE List V5
Vulnerability Description
Cypress Solutions CTM-200 2.7.1 contains an authenticated command injection vulnerability in the firmware upgrade script that allows remote attackers to execute shell commands. Attackers can exploit the 'fw_url' parameter in the ctm-config-upgrade.sh script to inject and execute arbitrary commands with root privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Cypress Solutions CTM-200 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cypress Solutions CTM-200是Cypress Solutions公司的一款无线网关。 Cypress Solutions CTM-200 2.7.1版本存在操作系统命令注入漏洞，该漏洞源于固件升级脚本fw_url参数存在经过身份验证的命令注入，可能导致远程攻击者以root权限执行shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cypress 200 2.7.1 -

II. Public POCs for CVE-2021-47745

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III. Intelligence Information for CVE-2021-47745

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Vendor Advisories for CVE-2021-47745 (1)

Exploits & Public PoCs for CVE-2021-47745 (1)

IV. Related Vulnerabilities

Same vendor: Cypress
Same weakness: CWE-78

V. Comments for CVE-2021-47745

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