CVE-2026-76590

Name of the Vulnerable Software and Affected Versions TRENDnet TEW-755AP versions prior to 20260702

Description A remote stack-based buffer overflow exists within the ssi component of the '/cgi-bin/wan.cgi' endpoint. This issue occurs when the cameo.wan.wan pppoe password 00 argument is manipulated. A stack-based buffer overflow is a condition where a program writes more data to a buffer located on the stack than the buffer is allocated to hold, potentially leading to crashes or arbitrary code execution.

Recommendations Update TRENDnet TEW-755AP to a version released after 20260702. Avoid using the cameo.wan.wan pppoe password 00 parameter in the '/cgi-bin/wan.cgi' endpoint as a temporary mitigation.