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I. Basic Information for CVE-2026-7140
Vulnerability Information
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Vulnerability Title
Totolink A8000RU CGI cstecgi.cgi CsteSystem os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument HTTP leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
TotolinkA8000RU 7.1cu.643_b20200521 cpe:2.3:o:totolink:a8000ru_firmware:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-7140
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8501 chars
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III. Intelligence Information for CVE-2026-7140
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IV. Related Vulnerabilities
Same product: A8000RU
Same vendor: Totolink
Same weakness: CWE-78
V. Comments for CVE-2026-7140

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