D-Link DIR809 Buffer Overflow (CVE-2021-33266; CVE-2021-33267; CVE-2021-33268; CVE-2021-33269; CVE-2021-33270; CVE-2021-33271; CVE-2021-33274)

A buffer overflow vulnerability exists in D-Link DIR809. Successful exploitation of this vulnerability could result in a denial of service or execution of arbitrary code into the affected system...

CVE-2021-33266

CVE-2021-33266 affects D-Link DIR-809 routers running firmware DIR-809Ax_FW1.12WWB03_20190410. The vulnerability is a stack buffer overflow in formVirtualApp, triggered by a crafted POST request via FUN_8004776c. Connected sources (Red Hat, CNVD, CVE records) confirm a severe impact: attacker cou...