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CVE-2026-7633— Totolink N300RH cstecgi.cgi setUploadSetting file inclusion

Quick assessment

Affected
Totolink N300RH
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.

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版本存在安全漏洞，该漏洞源于/cgi-bin/cstecgi.cgi文件中setUploadSetting函数对参数FileName的操作，可能导致文件包含。

CVSS 6.5 · Medium EPSS 0.33% · P26

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Totolink N300RH 6.1c.1353_B20190305 affected
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I. Basic Information for CVE-2026-7633

Vulnerability Information
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Vulnerability Title
Totolink N300RH cstecgi.cgi setUploadSetting file inclusion
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in Totolink N300RH 6.1c.1353_B20190305. This impacts the function setUploadSetting of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument FileName leads to file inclusion. The attack may be performed from remote. The exploit is publicly available and might be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK N300RH 安全漏洞
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版本存在安全漏洞，该漏洞源于/cgi-bin/cstecgi.cgi文件中setUploadSetting函数对参数FileName的操作，可能导致文件包含。
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
Totolink N300RH 6.1c.1353_B20190305 cpe:2.3:o:totolink:n300rh_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7633

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III. Intelligence Information for CVE-2026-7633

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Proof of Concept for CVE-2026-7633 (1)

IV. Related Vulnerabilities

Same product: N300RH
Same vendor: Totolink
Same weakness: CWE-73

V. Comments for CVE-2026-7633

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