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CVE-2025-6825— TOTOLINK A702R HTTP POST Request formWlSiteSurvey buffer overflow

Quick assessment

Affected
TOTOLINK A702R
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 A702r是中国吉翁电子（TOTOLINK）公司的一款路由器设备。 TOTOLINK A702r 4.0.0-B20230721.1521及之前版本存在安全漏洞，该漏洞源于文件/boafrm/formWlSiteSurvey中参数submit-url的错误操作，导致缓冲区溢出。

CVSS 8.8 · High EPSS 0.81% · P54
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I. Basic Information for CVE-2025-6825

Vulnerability Information
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Vulnerability Title
TOTOLINK A702R HTTP POST Request formWlSiteSurvey buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability classified as critical was found in TOTOLINK A702R up to 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWlSiteSurvey of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. 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:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK A702r 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A702r是中国吉翁电子（TOTOLINK）公司的一款路由器设备。 TOTOLINK A702r 4.0.0-B20230721.1521及之前版本存在安全漏洞，该漏洞源于文件/boafrm/formWlSiteSurvey中参数submit-url的错误操作，导致缓冲区溢出。
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 A702R 4.0.0-B20230721.1521 -

II. Public POCs for CVE-2025-6825

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7384 chars
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III. Intelligence Information for CVE-2025-6825

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Other References for CVE-2025-6825 (1)

IV. Related Vulnerabilities

Same product: A702R
Same vendor: TOTOLINK
Same weakness: CWE-120

V. Comments for CVE-2025-6825

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