EUVD-2026-18360
GHSA-g7rc-cpg5-3v55
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4Description
A security flaw has been discovered in Trendnet TEW-657BRM 1.00.1. The impacted element is the function update_pcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may 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.
Analysis
Stack-based buffer overflow in Trendnet TEW-657BRM 1.00.1 wireless router allows authenticated remote attackers to achieve code execution via the update_pcdb function in /setup.cgi by manipulating the mac_pc_dba parameter. This vulnerability affects a product discontinued since June 2011 (14+ years end-of-life) with no vendor support or patches available. …
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Remediation
Within 24 hours: Identify all Trendnet TEW-657BRM devices in production via network inventory and asset management systems; document business justification for any continued operation. Within 7 days: Develop decommissioning plan and procurement timeline for replacement network equipment; isolate affected devices to segregated network segments with restricted access if replacement cannot occur immediately. …
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