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CVE-2025-6393— TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr 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 A3002RU等都是中国吉翁电子（TOTOLINK）公司的产品。TOTOLINK A3002RU是一款无线路由器产品。TOTOLINK A702r是一款路由器设备。TOTOLINK A3002R是一款无线路由器。 TOTOLINK多款产品存在安全漏洞，该漏洞源于文件/boafrm/formIPv6Addr中参数submit-url的错误操作导致缓冲区溢出。以下产品受到影响：TOTOLINK A702R、A3002R、A3002RU和EX1200T。

CVSS 8.8 · High EPSS 1.02% · P62

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-6393

Vulnerability Information
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Vulnerability Title
TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Addr 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多款产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A3002RU等都是中国吉翁电子（TOTOLINK）公司的产品。TOTOLINK A3002RU是一款无线路由器产品。TOTOLINK A702r是一款路由器设备。TOTOLINK A3002R是一款无线路由器。 TOTOLINK多款产品存在安全漏洞，该漏洞源于文件/boafrm/formIPv6Addr中参数submit-url的错误操作导致缓冲区溢出。以下产品受到影响：TOTOLINK A702R、A3002R、A3002RU和EX1200T。
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 3.0.0-B20230809.1615 -
TOTOLINK A3002R 3.0.0-B20230809.1615 -
TOTOLINK A3002RU 3.0.0-B20230809.1615 -
TOTOLINK EX1200T 3.0.0-B20230809.1615 -

II. Public POCs for CVE-2025-6393

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9376 chars
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III. Intelligence Information for CVE-2025-6393

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Other References for CVE-2025-6393 (1)

Same Patch Batch · TOTOLINK · 2025-06-21 · 5 CVEs total

CVE-2025-6402 8.8 HIGH TOTOLINK X15 HTTP POST Request formIpv6Setup buffer overflow
CVE-2025-6400 8.8 HIGH TOTOLINK N300RH HTTP POST Message formPortFw buffer overflow
CVE-2025-6399 8.8 HIGH TOTOLINK X15 HTTP POST Request formIPv6Addr buffer overflow
CVE-2025-6401 3.5 LOW TOTOLINK N300RH HTTP POST Message formFilter denial of service

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-6393

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