CVE-2020-15632: D-Link Dir-842 Firmware

High severity, CVSS 8.8. EPSS: 3.3% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-842 3.13B05 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of HNAP GetCAPTCHAsetting requests. The issue results from the lack of proper handling of sessions. An attacker can leverage this vulnerability to execute arbitrary code in the context of the device. Was ZDI-CAN-10083.

Affected products

• D-Link Dir-842 Firmware: up to and including 3.13b09

Published 2020-07-23. Last modified 2026-06-17.