CVE-2019-16920

Name: CVE-2019-16920
Creator: NVD / NIST
Published: 2019-09-27T12:15:10.017+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 100.00%

Last modified Jun 17, 2026

CVE-2019-16920 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 100.00% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

100.00%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Apr 15, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dlink	Dir-655 Firmware	<= 3.02b05
Dlink	Dir-866l Firmware	<= 1.03b04
Dlink	Dir-652 Firmware	All versions
Dlink	Dhp-1565 Firmware	<= 1.01
Dlink	Dir-855l Firmware	All versions
Dlink	Dap-1533 Firmware	All versions
Dlink	Dir-862l Firmware	All versions
Dlink	Dir-615 Firmware	All versions
Dlink	Dir-835 Firmware	All versions
Dlink	Dir-825 Firmware	All versions

References

https://fortiguard.com/zeroday/FG-VD-19-117Broken Link, Third Party Advisory
https://medium.com/%4080vul/determine-the-device-model-affected-by-cve-2019-16920-by-zoomeye-bf6fec7f9bb3Exploit, Third Party Advisory
https://www.kb.cert.org/vuls/id/766427Third Party Advisory, US Government Resource
https://www.seebug.org/vuldb/ssvid-98079Exploit, Third Party Advisory
https://fortiguard.com/zeroday/FG-VD-19-117Broken Link, Third Party Advisory
https://medium.com/%4080vul/determine-the-device-model-affected-by-cve-2019-16920-by-zoomeye-bf6fec7f9bb3Exploit, Third Party Advisory
https://www.kb.cert.org/vuls/id/766427Third Party Advisory, US Government Resource
https://www.seebug.org/vuldb/ssvid-98079Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16920US Government Resource

Timeline

Published: Sep 27, 2019
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2019-16920?

How severe is CVE-2019-16920?

CVE-2019-16920 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 100.00% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2019-16920?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-16920?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST