CVE-2026-2155

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

Published Feb 8, 2026 CVSS 4.0 · 8.6 High EPSS 4.6% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Dlink
Dlink dir-823x
Dlink dir-823x Firmware
CPEs cpe:2.3:h:dlink:dir-823x:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-823x_firmware:250416:*:*:*:*:*:*:*
Vendors & Products Dlink
Dlink dir-823x
Dlink dir-823x Firmware
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared D-link
D-link dir-823x
Vendors & Products D-link
D-link dir-823x
Type Values Removed Values Added
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.
Title D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection
Weaknesses CWE-77
CWE-78
References
Metrics cvssV2_0

{'score': 8.3, 'vector': 'AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 7.2, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.6, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Feb 23, 2026, 9:42 AM
Reserved
Feb 7, 2026, 8:26 AM
Status
Analyzed
Published
Feb 8, 2026, 2:16 PM
Modified
Jun 17, 2026, 10:30 AM