CVE-2019-16920

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR...

9.8 CriticalIn KEVPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

100.0%Up 90.5 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2019-16920
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-78
Updated: 2026-11-02

CVE List 9.8

Record: CVE-2019-16920
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2019-7414 9.8

Record: EUVD-2019-7414
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5p5j-jvxx-68mp 9.8

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR...

Record: GHSA-5p5j-jvxx-68mp
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

CISA KEV No score

D-Link Multiple Routers Command Injection Vulnerability

Multiple D-Link routers contain a command injection vulnerability which can allow attackers to achieve full system compromise.

Record: CVE-2019-16920
Weakness: CWE-78
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	eniac888/CVE-2019-16920-MassPwn3r	2019-10-16
Nuclei	D-Link Routers - Remote Code Execution

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation, exploits
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, Nuclei, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-16920 is a critical vulnerability (CVSS 9.8) in D-link Multiple Routers, published September 27, 2019. CISA lists it as known to be exploited, since March 25, 2022. EUVD reports exploitation since March 25, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 100.0%, the 99th percentile. No source names a fixed version.