Edimax BR-6428NS Buffer Overflow and Command Injection

Stack buffer overflow in the Edimax BR-6428NS router (firmware 1.10) allows remote authenticated attackers to corrupt memory by sending an overlong pptpUserName parameter to the /goform/formPPTPSetup endpoint. Publicly available exploit code exists per VulDB disclosure, and no public exploit identified at time of analysis in CISA KEV. The vendor was reportedly contacted prior to disclosure but did not respond, leaving the device line without a confirmed fix.

Stack buffer overflow in the Edimax BR-6428NS router firmware version 1.10 allows authenticated remote attackers to corrupt memory by sending a crafted POST request to the formL2TPSetup handler with an oversized L2TPUserName parameter. Publicly available exploit code exists via a third-party Notion writeup, and the vendor was contacted but did not respond, leaving devices exposed without a coordinated fix. No CISA KEV listing or EPSS data is available to confirm active mass exploitation, but the combination of a public PoC and unresponsive vendor elevates real-world risk for any internet-exposed device.

Command injection in Edimax BR-6428NS firmware v1.10 allows authenticated remote attackers to execute arbitrary system commands via the stadrv_ssid parameter in POST requests to /goform/formStaDrvSetup. Public exploit code is available (documented in VulDB and researcher's Notion page), enabling low-complexity attacks against networks where attackers have obtained low-privilege credentials. The vendor received early disclosure but provided no response, leaving no official patch timeline.