CVE-2025-4271— TOTOLINK A720R cstecgi.cgi information disclosure
Quick assessment
Affected
TOTOLINK A720R
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 A720R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A720R 4.1.5cu.374版本存在访问控制错误漏洞，该漏洞源于文件/cgi-bin/cstecgi.cgi中参数topicurl处理不当，可能导致信息泄露。
Possible ATT&CK Techniques 1 AI
T1213 · Data from Information Repositories
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I. Basic Information for CVE-2025-4271
Vulnerability Information
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Vulnerability Title
TOTOLINK A720R cstecgi.cgi information disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument topicurl with the input showSyslog leads to information disclosure. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK A720R 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A720R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A720R 4.1.5cu.374版本存在访问控制错误漏洞，该漏洞源于文件/cgi-bin/cstecgi.cgi中参数topicurl处理不当，可能导致信息泄露。
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
II. Public POCs for CVE-2025-4271
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Same Patch Batch · TOTOLINK · 2025-05-05 · 4 CVEs total
| CVE-2025-4269 | 6.5 MEDIUM | TOTOLINK A720R Log cstecgi.cgi access control |
| CVE-2025-4268 | 5.3 MEDIUM | TOTOLINK A720R cstecgi.cgi missing authentication |
| CVE-2025-4270 | 5.3 MEDIUM | TOTOLINK A720R Config cstecgi.cgi information disclosure |
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V. Comments for CVE-2025-4271
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