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CVE-2025-6939— TOTOLINK A3002RU HTTP POST Request formWlSiteSurvey buffer overflow

Quick assessment

Affected
TOTOLINK A3002RU
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 A3002RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器产品。 TOTOLINK A3002RU 3.0.0-B20230809.1615版本存在安全漏洞，该漏洞源于对文件/boafrm/formWlSiteSurvey中参数submit-url的错误操作导致缓冲区溢出。

CVSS 8.8 · High EPSS 0.96% · P60
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I. Basic Information for CVE-2025-6939

Vulnerability Information
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Vulnerability Title
TOTOLINK A3002RU HTTP POST Request formWlSiteSurvey buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability classified as critical has been found in TOTOLINK A3002RU 3.0.0-B20230809.1615. Affected is an unknown function of the file /boafrm/formWlSiteSurvey of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack 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 A3002RU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A3002RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器产品。 TOTOLINK A3002RU 3.0.0-B20230809.1615版本存在安全漏洞，该漏洞源于对文件/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 A3002RU 3.0.0-B20230809.1615 -

II. Public POCs for CVE-2025-6939

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7509 chars
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III. Intelligence Information for CVE-2025-6939

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Other References for CVE-2025-6939 (1)

Same Patch Batch · TOTOLINK · 2025-07-01 · 3 CVEs total

CVE-2025-6940 8.8 HIGH TOTOLINK A702R HTTP POST Request formParentControl buffer overflow
CVE-2025-6953 8.8 HIGH TOTOLINK A3002RU HTTP POST Request formParentControl buffer overflow

IV. Related Vulnerabilities

Same product: A3002RU
Same vendor: TOTOLINK
Same weakness: CWE-120

V. Comments for CVE-2025-6939

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