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CVE-2025-8137— TOTOLINK A702R HTTP POST Request formIpQoS 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HTTP POST请求处理组件中文件/boafrm/formIpQoS对参数mac的错误操作导致缓冲区溢出。

CVSS 8.8 · High EPSS 1.00% · P60
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I. Basic Information for CVE-2025-8137

Vulnerability Information
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Vulnerability Title
TOTOLINK A702R HTTP POST Request formIpQoS 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. Affected by this vulnerability is an unknown functionality of the file /boafrm/formIpQoS of the component HTTP POST Request Handler. The manipulation of the argument mac 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版本存在安全漏洞，该漏洞源于HTTP POST请求处理组件中文件/boafrm/formIpQoS对参数mac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-2025-8137

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7502 chars
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III. Intelligence Information for CVE-2025-8137

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Security Blog Posts for CVE-2025-8137 (1)

Same Patch Batch · TOTOLINK · 2025-07-25 · 6 CVEs total

CVE-2025-8136 8.8 HIGH TOTOLINK A702R HTTP POST Request formFilter buffer overflow
CVE-2025-8138 8.8 HIGH TOTOLINK A702R HTTP POST Request formOneKeyAccessButton buffer overflow
CVE-2025-8139 8.8 HIGH TOTOLINK A702R HTTP POST Request formPortFw buffer overflow
CVE-2025-8140 8.8 HIGH TOTOLINK A702R HTTP POST Request formWlanMultipleAP buffer overflow
CVE-2025-8170 8.8 HIGH TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net buffer overflow

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-8137

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