CVE-2026-2155 HIGH

CVE-2026-2155: D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection

Vendor D-Link
Product DIR-823X
Weakness CWE-78
Published February 8, 2026
Last update February 23, 2026
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 8, 2026 CVE published
February 23, 2026 Record updated