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CVE-2026-3301— Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection

Quick assessment

Affected
Totolink N300RH
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TOTOLINK N300RH是中国吉翁电子（TOTOLINK）公司的一款长距离无线路由器。 TOTOLINK N300RH 6.1c.1353_B20190305版本存在操作系统命令注入漏洞，该漏洞源于对组件Web Management Interface的文件/cgi-bin/cstecgi.cgi中函数setWebWlanIdx的参数webWlanIdx的错误操作，可能导致os命令注入。

CVSS 9.8 · Critical EPSS 4.51% · P91

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-3301

Vulnerability Information
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Vulnerability Title
Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305. Affected by this vulnerability is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument webWlanIdx results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
TOTOLINK N300RH 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK N300RH是中国吉翁电子（TOTOLINK）公司的一款长距离无线路由器。 TOTOLINK N300RH 6.1c.1353_B20190305版本存在操作系统命令注入漏洞，该漏洞源于对组件Web Management Interface的文件/cgi-bin/cstecgi.cgi中函数setWebWlanIdx的参数webWlanIdx的错误操作，可能导致os命令注入。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Totolink N300RH 6.1c.1353_B20190305 cpe:2.3:o:totolink:n300rh_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-3301

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8528 chars
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III. Intelligence Information for CVE-2026-3301

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Proof of Concept for CVE-2026-3301 (1)

IV. Related Vulnerabilities

Same product: N300RH
Same vendor: Totolink
Same weakness: CWE-78

V. Comments for CVE-2026-3301

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