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CVE-2026-5351— Trendnet TEW-657BRM setup.cgi add_wps_client os command injection

Quick assessment

Affected
Trendnet TEW-657BRM
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TRENDnet TEW-657BRM是美国趋势网络（TRENDnet）公司的一个WiFi路由器。 TRENDnet TEW-657BRM 1.00.1版本存在操作系统命令注入漏洞，该漏洞源于对文件/setup.cgi中add_wps_client函数参数wl_enrolee_pin的错误操作，可能导致os命令注入。

CVSS 6.3 · Medium EPSS 4.46% · P91
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I. Basic Information for CVE-2026-5351

Vulnerability Information
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Vulnerability Title
Trendnet TEW-657BRM setup.cgi add_wps_client os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in Trendnet TEW-657BRM 1.00.1. This affects the function add_wps_client of the file /setup.cgi. This manipulation of the argument wl_enrolee_pin causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor confirms, that "[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us." This vulnerability only affects products that are no longer supported by the maintainer.
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
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
TRENDnet TEW-657BRM 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TRENDnet TEW-657BRM是美国趋势网络（TRENDnet）公司的一个WiFi路由器。 TRENDnet TEW-657BRM 1.00.1版本存在操作系统命令注入漏洞，该漏洞源于对文件/setup.cgi中add_wps_client函数参数wl_enrolee_pin的错误操作，可能导致os命令注入。
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
Trendnet TEW-657BRM 1.00.1 cpe:2.3:o:trendnet:tew-657brm_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5351

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III. Intelligence Information for CVE-2026-5351

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Vendor Advisories for CVE-2026-5351 (2)

Proof of Concept for CVE-2026-5351 (1)

Same Patch Batch · Trendnet · 2026-04-02 · 7 CVEs total

CVE-2026-5349 8.8 HIGH Trendnet TEW-657BRM setup.cgi add_apcdb stack-based overflow
CVE-2026-5350 8.8 HIGH Trendnet TEW-657BRM setup.cgi update_pcdb stack-based overflow
CVE-2026-5354 6.3 MEDIUM Trendnet TEW-657BRM setup.cgi vpn_connect os command injection
CVE-2026-5352 6.3 MEDIUM Trendnet TEW-657BRM setup.cgi edit os command injection
CVE-2026-5353 6.3 MEDIUM Trendnet TEW-657BRM setup.cgi ping_test os command injection
CVE-2026-5355 6.3 MEDIUM Trendnet TEW-657BRM setup.cgi vpn_drop os command injection

IV. Related Vulnerabilities

Same product: TEW-657BRM
Same vendor: Trendnet
Same weakness: CWE-78

V. Comments for CVE-2026-5351

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