D-Link DIR-823X 250416 Configuration /goform/set_dmz sub_4208A0 dmz_host/dmz_enable os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.68

Summaryinfo

A vulnerability identified as critical has been detected in D-Link DIR-823X 250416. The impacted element is the function sub_4208A0 of the file /goform/set_dmz of the component Configuration Handler. This manipulation of the argument dmz_host/dmz_enable causes os command injection. This vulnerability is tracked as CVE-2026-2155. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability has been found in D-Link DIR-823X 250416 and classified as critical. Affected by this vulnerability 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 with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-2155. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/09/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-5794) and CERT Bund (WID-SEC-2026-0340). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • D-LINK Router

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.2
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.2
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/07/2026 Advisory disclosed
02/07/2026 +0 days VulDB entry created
02/09/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2026-2155 (🔒)
GCVE (CVE): GCVE-0-2026-2155
GCVE (VulDB): GCVE-100-344857
EUVD: 🔒
CERT Bund: WID-SEC-2026-0340 - D-LINK DIR-823X und DWR-M921 Router: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/07/2026 09:31
Updated: 02/09/2026 15:47
Changes: 02/07/2026 09:31 (58), 02/08/2026 16:01 (31), 02/09/2026 06:56 (1), 02/09/2026 15:47 (7)
Complete: 🔍
Submitter: 942384053
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #748236: D-Link DIR-823X 250416 OS Command Injection (by 942384053)

Duplicate

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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