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HIGH

CVE-2026-2155

D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection

CVSS v3

7.2

HIGH

EPSS Score

4.0 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

poc

SSVC status

Description

A security flaw has been discovered in D-Link DIR-823X 250416. The affected element is the function sub_4208A0 of the file /goform/set_dmz of the component Configuration Handler. The manipulation of the argument dmz_host/dmz_enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Technical details

Published
2026-02-08
Last Modified
2026-02-11

Frequently asked questions

What is CVE-2026-2155?

A security flaw has been discovered in D-Link DIR-823X 250416. The affected element is the function sub_4208A0 of the file /goform/set_dmz of the component Configuration Handler. The manipulation of the argument dmz_host/dmz_enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Is CVE-2026-2155 actively exploited?

A proof-of-concept exploit exists for CVE-2026-2155, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-2155?

CVE-2026-2155 has a CVSS v3 base score of 7.2 (HIGH severity).

Is CVE-2026-2155 affecting your environment?

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