D-Link DIR-823X 250416 DDNS Service /goform/set_ddns ddnsType/ddnsDomainName/ddnsUserName/ddnsPwd os command injection
Summary
A vulnerability classified as critical was found in D-Link DIR-823X 250416. Impacted is an unknown function of the file /goform/set_ddns of the component DDNS Service. The manipulation of the argument ddnsType/ddnsDomainName/ddnsUserName/ddnsPwd results in os command injection. This vulnerability was named CVE-2026-2143. The attack may be performed from remote. In addition, an exploit is available.
Details
A vulnerability was found in D-Link DIR-823X 250416. It has been classified as critical. Affected is an unknown function of the file /goform/set_ddns of the component DDNS Service. The manipulation of the argument ddnsType/ddnsDomainName/ddnsUserName/ddnsPwd with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.
The advisory is available at github.com. This vulnerability is traded as CVE-2026-2143. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are necessary for exploitation. Technical details and a public exploit are known. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 02/09/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.
The exploit is shared for download 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-2026-5805) and CERT Bund (WID-SEC-2026-0340). If you want to get best quality of vulnerability data, you may have to visit VulDB.
Affected
- D-LINK Router
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.dlink.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 7.2VulDB 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: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Os command injectionCWE: 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: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
02/06/2026 Advisory disclosed02/06/2026 VulDB entry created
02/09/2026 VulDB entry last update
Sources
Vendor: dlink.comAdvisory: github.com
Status: Not defined
CVE: CVE-2026-2143 (🔒)
GCVE (CVE): GCVE-0-2026-2143
GCVE (VulDB): GCVE-100-344778
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
Entry
Created: 02/06/2026 22:14Updated: 02/09/2026 15:47
Changes: 02/06/2026 22:14 (57), 02/08/2026 11:17 (31), 02/09/2026 06:56 (1), 02/09/2026 15:47 (7)
Complete: 🔍
Submitter: jiefengliang
Cache ID: 216::103
Submit
Accepted
- Submit #747492: D-Link DIR-823X 250416 OS Command Injection (by jiefengliang)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
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