CVE-2021-33267

Name of the Vulnerable Software and Affected Versions D-Link DIR-809 devices with firmware through DIR-809Ax FW1.12WWB03 20190410

Description A stack buffer overflow issue exists in the function FUN 80034d60 in the /formStaticDHCP endpoint. This issue can be triggered via a crafted POST request, potentially allowing a remote attacker to execute arbitrary code in the system.

Recommendations For D-Link DIR-809 devices with firmware through DIR-809Ax FW1.12WWB03 20190410, consider disabling access to the /formStaticDHCP endpoint until a patch is available. As a temporary workaround, restrict the use of the FUN 80034d60 function to minimize the risk of exploitation. Avoid using the /formStaticDHCP endpoint with crafted POST requests until the issue is resolved.