CVE-2019-16920: D-Link Multiple Routers Command Injection Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-03-25. EPSS: 100% chance of exploitation in the next 30 days.

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565. The issue occurs when the attacker sends an arbitrary input to a "PingTest" device common gateway interface that could lead to common injection. An attacker who successfully triggers the command injection could achieve full system compromise. Later, it was independently found that these are also affected: DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.

Affected products

• D-Link Dap-1533 Firmware: affected versions not specified
• D-Link Dhp-1565 Firmware: up to and including 1.01
• D-Link Dir-615 Firmware: affected versions not specified
• D-Link Dir-652 Firmware: affected versions not specified
• D-Link Dir-655 Firmware: up to and including 3.02b05
• D-Link DIR-825 Firmware: affected versions not specified
• D-Link Dir-835 Firmware: affected versions not specified
• D-Link Dir-855l Firmware: affected versions not specified
• D-Link Dir-862l Firmware: affected versions not specified
• D-Link Dir-866l Firmware: up to and including 1.03b04

Published 2019-09-27. Last modified 2026-06-17.