Which products and versions are affected by CVE-2019-16920?

Affected: Dap-1533 Firmware (Dlink); Dhp-1565 Firmware (Dlink); Dir-615 Firmware (Dlink), among others. The full list is in the CVE brief.

Is CVE-2019-16920 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 16, 2020 and is known to be used in ransomware campaigns.

Is CVE-2019-16920 in the CISA KEV catalog?

Yes. It was added on Mar 25, 2022 with a federal remediation due date of Apr 15, 2022.

Is there a public exploit for CVE-2019-16920?

Public exploit code is available.

Is there a fix for CVE-2019-16920?

Fixed versions are available, including Dhp-1565 Firmware <=1.01, Dir-655 Firmware <=3.02b05, Dir-866l Firmware <=1.03b04.

How urgently should CVE-2019-16920 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2019-16920

Q: 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.

Q: How urgently should CVE-2019-16920 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CriticalExploitedPublic exploit

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565.

Published Sep 27, 2019 · Updated Nov 7, 2025

Key Facts

Patch immediately

CVE-2019-16920 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Dap-1533 Firmware (Dlink), Dhp-1565 Firmware (Dlink), Dir-615 Firmware (Dlink) and 7 more products.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 16, 2020 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 100% probability of exploitation in the next 30 days.
Fixed versions are available, including Dhp-1565 Firmware <=1.01, Dir-655 Firmware <=3.02b05, Dir-866l Firmware <=1.03b04.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

100%

Higher than 99.9% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2019-16920 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Mar 25, 2022	Apr 15, 2022	Not reported
Industry KEV feed	Sep 16, 2020	Apr 15, 2022	Known
CIRCL KEV	Mar 25, 2022	Apr 15, 2022	Not reported
ENISA EUVD	Mar 25, 2022	n/a	Not reported

Required action: The impacted product is end-of-life and should be disconnected if still in use.

Affected Products

10 affected entries in total

Product	Affected versions	Fixed in
Dap-1533 FirmwareDlink	See advisory	n/a
Dhp-1565 FirmwareDlink	See advisory	1.01
Dir-615 FirmwareDlink	See advisory	n/a
Dir-652 FirmwareDlink	See advisory	n/a
Dir-655 FirmwareDlink	See advisory	3.02b05

5 more affected products in the full CVE brief

Patched Releases

Dhp-1565 Firmware

<=1.01

Dir-655 Firmware

<=3.02b05

Dir-866l Firmware

<=1.03b04

Timeline

Publicly disclosed
Sep 27, 2019
Added to Industry KEV feed
Sep 16, 2020
Added to CISA KEV
Mar 25, 2022
Added to CIRCL KEV
Mar 25, 2022
Added to ENISA EUVD
Mar 25, 2022
Last updated
Nov 7, 2025

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

advisoryhttps://fortiguard.com/zeroday/FG-VD-19-117
advisoryVU#766427
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report
exploitVulnCheck exploitation report

10 more references in the full CVE brief

FAQ

Common Questions.

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565.
Affected: Dap-1533 Firmware (Dlink); Dhp-1565 Firmware (Dlink); Dir-615 Firmware (Dlink), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 16, 2020 and is known to be used in ransomware campaigns.
Yes. It was added on Mar 25, 2022 with a federal remediation due date of Apr 15, 2022.
Public exploit code is available.
Fixed versions are available, including Dhp-1565 Firmware <=1.01, Dir-655 Firmware <=3.02b05, Dir-866l Firmware <=1.03b04.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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