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CVE-2025-8938— TOTOLINK N350R Telnet Service formSysTel backdoor

Quick assessment

Affected
TOTOLINK N350R
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TOTOLINK N350R是中国吉翁电子（TOTOLINK）公司的一个WiFi路由器。 TOTOLINK N350R 1.2.3-B20130826版本存在安全漏洞，该漏洞源于文件/boafrm/formSysTel中参数TelEnabled的错误操作导致后门。

CVSS 6.3 · Medium EPSS 0.31% · P24

Possible ATT&CK Techniques 1 AI

T1136.002 · Domain Account
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I. Basic Information for CVE-2025-8938

Vulnerability Information
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Vulnerability Title
TOTOLINK N350R Telnet Service formSysTel backdoor
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in TOTOLINK N350R 1.2.3-B20130826. This issue affects the function formSysTel of the file /boafrm/formSysTel of the component Telnet Service. The manipulation of the argument TelEnabled leads to backdoor. The attack may 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:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
隐藏功能
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK N350R 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK N350R是中国吉翁电子（TOTOLINK）公司的一个WiFi路由器。 TOTOLINK N350R 1.2.3-B20130826版本存在安全漏洞，该漏洞源于文件/boafrm/formSysTel中参数TelEnabled的错误操作导致后门。
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 N350R 1.2.3-B20130826 -

II. Public POCs for CVE-2025-8938

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III. Intelligence Information for CVE-2025-8938

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IV. Related Vulnerabilities

Same product: N350R
Same vendor: TOTOLINK
Same weakness: CWE-912

V. Comments for CVE-2025-8938

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