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CVE-2026-2143

D-Link Dir-823x Firmware command injection

7.2 HIGHPublic exploitEPSS 5.02%
  1. Published8 Feb 2026

Description

A security vulnerability has been detected in D-Link DIR-823X 250416. This issue affects some unknown processing of the file /goform/set_ddns of the component DDNS Service. The manipulation of the argument ddnsType/ddnsDomainName/ddnsUserName/ddnsPwd leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

CVSS 3.1 breakdown

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

Affected products

D-Link Dir-823x Firmware250416

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-2026-2143 being actively exploited?

CVE-2026-2143 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 5.02%.

How severe is CVE-2026-2143?

CVE-2026-2143 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 5.02% probability of exploitation.

Which products are affected by CVE-2026-2143?

Affected products include D-Link Dir-823x Firmware.

How do I fix CVE-2026-2143?

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-2026-2143 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. 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.