CVE-2026-4213 | D-Link DNS-1550-04 up to 20260205 /cgi-bin/gui_mgr.cgi cgi_myfavorite_del_user/cgi_myfavorite_verify stack-based overflow

A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205 and classified as critical. This vulnerability affects the function cgi_myfavorite_del_user/cgi_myfavorite_verify of the file /cgi-bin/gui_mgr.cgi. Performing a manipulation results in stack-based buffer overflow.

This vulnerability was named CVE-2026-4213. The attack may be initiated remotely. In addition, an exploit is available.