CVE-2021-46319: D-Link Dir-846 Firmware

Critical severity, CVSS 9.8. EPSS: 6.6% chance of exploitation in the next 30 days.

Remote Code Execution (RCE) vulnerability exists in D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin. Malicious users can use this vulnerability to use "\ " or backticks to bypass the shell metacharacters in the ssid0 or ssid1 parameters to execute arbitrary commands.This vulnerability is due to the fact that CVE-2019-17509 is not fully patched and can be bypassed by using line breaks or backticks on its basis.

Affected products

• D-Link Dir-846 Firmware: version 100a43 only; version 100a53dla only

Published 2022-02-17. Last modified 2026-06-17.