CVE-2026-13563

Name of the Vulnerable Software and Affected Versions Edimax EW-7478APC version 1.04

Description A stack-based buffer overflow exists in the POST Request Handler component. The issue occurs within the formL2TPSetup() function located in the /goform/formL2TPSetup endpoint when the L2TPUserName argument is manipulated. This flaw allows a remote attacker to trigger the overflow.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the /goform/formL2TPSetup endpoint to minimize the risk of exploitation.