Is CVE-2019-16920 actively exploited?

CVE-2019-16920 has no public evidence of in-the-wild exploitation as of 2025-11-07.

What is the CVSS score for CVE-2019-16920?

CVE-2019-16920 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2019-16920?

Patch guidance is available from dlink security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-16920.

Fix CVE-2019-16920 - CRITICAL dlink dir-655 firmware

Q: Which products are affected by CVE-2019-16920?

10 products: dlink dir-655 firmware, dlink dir-866l firmware, dlink dir-652 firmware, dlink dhp-1565 firmware, dlink dir-855l firmware, and 5 more.

Description

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection CWE-78 · OS Command Injection

Metadata

Primary Vendor: DLINK
Published: 9/27/2019
Last Modified: 11/7/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

dlink : dir-655_firmwaredlink : dir-866l_firmwaredlink : dir-652_firmwaredlink : dhp-1565_firmwaredlink : dir-855l_firmwaredlink : dap-1533_firmwaredlink : dir-862l_firmwaredlink : dir-615_firmwaredlink : dir-835_firmwaredlink : dir-825_firmware

Remediation Guidance

Executive Summary

View on NIST NVD