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CVE-2025-6627— TOTOLINK A702R HTTP POST Request formIpv6Setup 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版本存在安全漏洞，该漏洞源于文件/boafrm/formIpv6Setup对参数submit-url处理不当，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 3.64% · P89
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I. Basic Information for CVE-2025-6627

Vulnerability Information
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Vulnerability Title
TOTOLINK A702R HTTP POST Request formIpv6Setup buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be initiated 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版本存在安全漏洞，该漏洞源于文件/boafrm/formIpv6Setup对参数submit-url处理不当，可能导致缓冲区溢出。
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-2025-6627

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6957 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-6627

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Proof of Concept for CVE-2025-6627 (1)

Other References for CVE-2025-6627 (1)

Same Patch Batch · TOTOLINK · 2025-06-25 · 5 CVEs total

CVE-2025-6621 6.3 MEDIUM TOTOLINK CA300-PoE ap.so QuickSetting os command injection
CVE-2025-6620 6.3 MEDIUM TOTOLINK CA300-PoE upgrade.so setUpgradeUboot os command injection
CVE-2025-6619 6.3 MEDIUM TOTOLINK CA300-PoE upgrade.so setUpgradeFW os command injection
CVE-2025-6618 6.3 MEDIUM TOTOLINK CA300-PoE wps.so SetWLanApcliSettings os command injection

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-6627

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