Vulnerability details

CVE-2026-2155

D-Link DIR-823X

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

CVSS 4.0

8.6High

Official 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.

CVSS scores

Score	Version	Source	Vector
8.6High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`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`
7.2High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`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`
7.2High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`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`
8.3High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
D-Link	DIR-823X	250416	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/?id.344857 vdb-entrytechnical-description
https://vuldb.com/?ctiid.344857 signaturepermissions-required
https://vuldb.com/?submit.748236 third-party-advisory
https://vuldb.com/?submit.750038 third-party-advisory
https://github.com/master-abc/cve/issues/32 exploitissue-tracking
https://www.dlink.com/ product

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Details

Published: 2026-02-08
Last updated: 2026-02-23
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

4.57%

Probability of exploitation in 30 days

91.6%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-78
OS Command Injection
CWE-77
Command Injection