D-Link DIR-809 fromLogin Buffer Overflow Vulnerability (CNVD-2021-94720)

A buffer overflow vulnerability exists in the D-Link DIR-809, a dual-band router from D-Link, China, which stems from the failure of the sub_8003183C function in the product/fromLogin link to effectively determine data boundaries. An attacker could cause a buffer overflow resulting in a denial of service or code execution via a POST request.