OS Command Injection in Trendnet TEW-657BRM Router
CVE-2026-5351

5.3MEDIUM

Key Information:

Vendor

Trendnet

Status
Tew-657brm
Vendor
CVE Published:
2 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5351?

A vulnerability exists in the Trendnet TEW-657BRM router due to improper handling of the wl_enrolee_pin argument in the add_wps_client function within the setup.cgi file. This weakness allows for OS command injection, potentially enabling remote attackers to execute arbitrary commands on the device. The impacted product has been discontinued since June 23, 2011, which means that it is no longer supported by the vendor, Trendnet. As a result, they cannot provide fixes or confirm the vulnerability, leaving users of the outdated firmware at risk.

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Affected Version(s)

TEW-657BRM 1.00.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5351 - Proof of Concept

References

https://vuldb.com/vuln/354704
vdb-entrytechnical-description
https://vuldb.com/vuln/354704/cti
signaturepermissions-required
https://vuldb.com/submit/781564
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

panda_0x1 (VulDB User)
VulDB CNA Team
JSON
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