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CVE-2019-16920

D-Link Multiple Routers Command Injection

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 100.0%
  1. Published27 Sept 2019
  2. Added to CISA KEV25 Mar 2022
  3. Remediation due15 Apr 2022
Actively exploited (CISA KEV)

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

Added to KEV: 25 Mar 2022Federal remediation due: 15 Apr 2022

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

D-Link Dap-1533 Firmwareall versions
D-Link Dhp-1565 Firmware≤ 1.01
D-Link Dir-615 Firmwareall versions
D-Link Dir-652 Firmwareall versions
D-Link Dir-655 Firmware≤ 3.02b05
D-Link Dir-825 Firmwareall versions
D-Link Dir-835 Firmwareall versions
D-Link Dir-855l Firmwareall versions
D-Link Dir-862l Firmwareall versions
D-Link Dir-866l Firmware≤ 1.03b04

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2019-16920 being actively exploited?

Yes. CVE-2019-16920 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Mar 2022.

How severe is CVE-2019-16920?

CVE-2019-16920 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2019-16920?

Affected products include D-Link Dap-1533 Firmware, D-Link Dhp-1565 Firmware, D-Link Dir-615 Firmware, D-Link Dir-652 Firmware, D-Link Dir-655 Firmware, and 5 more.

How do I fix CVE-2019-16920?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2019-16920 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.