A vulnerability, which was classified as critical, was found in D-Link DIR-846 FW100A53DBR. This affects an unknown part of the file /HNAP1/ of the component QoS POST Handler. The manipulation of the argument smartqos_express_devices/smartqos_normal_devices leads to deserialization.

This vulnerability is uniquely identified as CVE-2023-6580. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

The vendor was contacted early about this disclosure but did not respond in any way.