D-Link Multiple Routers Command Injection Vulnerability
n/a — n/a
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.
9.8
100.0%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- Sep 27, 2019
- Modified
- Jun 17, 2026
- Added to KEV
- Mar 25, 2022
- Federal patch due
- Apr 15, 2022
CISA required action
The impacted product is end-of-life and should be disconnected if still in use.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
1 foundWeaponization
Public repositories whose name or description references CVE-2019-16920, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2019-16920?
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.
How severe is CVE-2019-16920?
CVE-2019-16920 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2019-16920 actively exploited in the wild?
Yes. CVE-2019-16920 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Mar 25, 2022, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2019-16920?
100.0% - meaning FIRST.org's EPSS model estimates a 100.0% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2019-16920?
Yes - a public Nuclei template referencing CVE-2019-16920 exist in public repositories we checked. We also found 1 public GitHub repositories referencing this CVE.
What type of vulnerability is CVE-2019-16920?
CVE-2019-16920 is classified under CWE-78 (CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).
Cross-checked against
Impactr finds and proves whether CVE-2019-16920 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.