CVE-2026-5349
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk52th percentile - higher than 52% of all known CVEs
Summary
A stack-based buffer overflow vulnerability was identified in Trendnet TEW-657BRM version 1.00.1 in the add_apcdb function of /setup.cgi via the mac_pc_dba argument. The attack can be performed remotely and the exploit is publicly available. The vendor confirmed the product is end-of-life since 2011 and no longer supported.
Risk Assessment
The risk involves potential remote code execution or device crash on a device that no longer receives security patches. Organizations still using this hardware are exposed to unpatched attacks.
Recommendation
Immediately decommission Trendnet TEW-657BRM devices and replace them with newer, supported models. If not possible, isolate them from the production network.
Other vulnerabilities in Trendnet TEW-657BRM
See all- CVE-2026-5355Medium
A vulnerability has been found in Trendnet TEW-657BRM 1.00.1. The function vpn_drop in the file /setup.cgi is affected by OS command injection via manipulation of the argument policy_name. The attack can be launched remotely and the exploit has been disclosed. The vendor confirmed the product is end-of-life since 2011 and no patch will be released.
- CVE-2026-5354Medium
A flaw has been found in Trendnet TEW-657BRM 1.00.1. The function vpn_connect in the file /setup.cgi is affected by OS command injection via manipulation of the argument policy_name. The attack can be launched remotely and the exploit has been published. The vendor confirmed the product is end-of-life since 2011 and no patch will be released.
- CVE-2026-5353Medium
A vulnerability was detected in Trendnet TEW-657BRM 1.00.1. The function ping_test in the file /setup.cgi is affected by OS command injection via manipulation of the argument c4_IPAddr. The attack can be launched remotely and the exploit is now public. The vendor confirmed the product is end-of-life since 2011 and no patch will be released.
- CVE-2026-5351Medium
A weakness has been identified in Trendnet TEW-657BRM 1.00.1. The function add_wps_client in the file /setup.cgi is affected by OS command injection via manipulation of the argument wl_enrolee_pin. The attack can be launched remotely and the exploit has been made public. The vendor confirmed the product is end-of-life since 2011 and no patch will be released.
- CVE-2026-5352Medium
An OS command injection vulnerability was found in Trendnet TEW-657BRM router version 1.00.1 in the Edit function of the /setup.cgi file. Manipulating the pcdb_list argument allows remote command execution. The vendor confirmed the product is discontinued and unsupported since 2011.
- CVE-2026-5350High
A vulnerability in the discontinued Trendnet TEW-657BRM router (version 1.00.1) allows remote stack-based buffer overflow via the mac_pc_dba argument in /setup.cgi. The vendor confirmed the product is end-of-life and no longer supported.
Original NVD description (English source)
A vulnerability was identified in Trendnet TEW-657BRM 1.00.1. The affected element is the function add_apcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used. 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.