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CVE-2025-3666— TOTOLINK A3700R cstecgi.cgi setDdnsCfg access control

CVSS 5.3 · Medium EPSS 0.58% · P69
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I. Basic Information for CVE-2025-3666

Vulnerability Information
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Vulnerability Title
TOTOLINK A3700R cstecgi.cgi setDdnsCfg access control
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in TOTOLINK A3700R 9.1.2u.5822_B20200513 and classified as critical. Affected by this issue is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to improper access controls. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
TOTOLINK A3700R 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A3700R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A3700R 9.1.2u.5822_B20200513版本存在安全漏洞，该漏洞源于/cgi-bin/cstecgi.cgi文件setDdnsCfg函数访问控制不当。
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

VendorProductAffected VersionsCPESubscribe
TOTOLINKA3700R 9.1.2u.5822_B20200513 -

II. Public POCs for CVE-2025-3666

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III. Intelligence Information for CVE-2025-3666

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Same Patch Batch · TOTOLINK · 2025-04-16 · 8 CVEs total

CVE-2025-36635.3 MEDIUMTOTOLINK A3700R Password cstecgi.cgi setWiFiEasyGuestCfg access control
CVE-2025-36645.3 MEDIUMTOTOLINK A3700R cstecgi.cgi setWiFiEasyGuestCfg access control
CVE-2025-36655.3 MEDIUMTOTOLINK A3700R cstecgi.cgi setSmartQosCfg access control
CVE-2025-36675.3 MEDIUMTOTOLINK A3700R cstecgi.cgi setUPnPCfg access control
CVE-2025-36685.3 MEDIUMTOTOLINK A3700R cstecgi.cgi setScheduleCfg access control
CVE-2025-36745.3 MEDIUMTOTOLINK A3700R cstecgi.cgi setUrlFilterRules access control
CVE-2025-36755.3 MEDIUMTOTOLINK A3700R cstecgi.cgi setL2tpServerCfg access control

IV. Related Vulnerabilities

Same product: A3700R
Same vendor: TOTOLINK
Same weakness: CWE-284

V. Comments for CVE-2025-3666

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