Trendnet TEW-657BRM 1.00.1 /setup.cgi add_wps_client wl_enrolee_pin os command injection

Summaryinfo

A vulnerability classified as critical was found in Trendnet TEW-657BRM 1.00.1. This impacts the function add_wps_client of the file /setup.cgi. Such manipulation of the argument wl_enrolee_pin leads to os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is traded as CVE-2026-5351. The attack may be launched remotely. Furthermore, there is an exploit available. 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."

Detailsinfo

A vulnerability was found in Trendnet TEW-657BRM 1.00.1 and classified as critical. Affected by this issue is the function add_wps_client of the file /setup.cgi. The manipulation of the argument wl_enrolee_pin with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-5351. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

The exploit is available at github.com. It is declared as proof-of-concept. 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."

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-18362). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Trendnet

Name

• TEW-657BRM

Version

• 1.00.1

License

• commercial

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

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Submitinfo

Accepted

• Submit #781564: TRENDnet TEW-657BRM 1.00.1 Command Injection (by panda_0x1)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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