D-Link DIR-823X 250416 /goform/set_filtering sub_4211C8 os command injection
Summary
A vulnerability was found in D-Link DIR-823X 250416. It has been rated as critical. This impacts the function sub_4211C8 of the file /goform/set_filtering. Performing a manipulation results in os command injection.
This vulnerability is known as CVE-2026-2210. Remote exploitation of the attack is possible. Furthermore, an exploit is available.
Details
A vulnerability classified as critical has been found in D-Link DIR-823X 250416. This affects the function sub_4211C8 of the file /goform/set_filtering. The manipulation 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 shared at github.com. This vulnerability is uniquely identified as CVE-2026-2210. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. Technical details and a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/10/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.
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 CNNVD (CNNVD-202602-1393) and CERT Bund (WID-SEC-2026-0340). If you want to get the best quality for vulnerability data then you always have to consider 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
02/08/2026 Advisory disclosed02/08/2026 VulDB entry created
02/10/2026 VulDB entry last update
Sources
Vendor: dlink.comAdvisory: github.com
Status: Not defined
CVE: CVE-2026-2210 (🔒)
GCVE (CVE): GCVE-0-2026-2210
GCVE (VulDB): GCVE-100-344925
CERT Bund: WID-SEC-2026-0340 - D-LINK DIR-823X und DWR-M921 Router: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten
CNNVD: CNNVD-202602-1393 - D-Link DIR-823X 操作系统命令注入漏洞
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/08/2026 09:14Updated: 02/10/2026 16:54
Changes: 02/08/2026 09:14 (56), 02/09/2026 05:28 (31), 02/09/2026 15:47 (7), 02/10/2026 16:54 (6)
Complete: 🔍
Submitter: junqi
Cache ID: 216::103
Submit
Accepted
- Submit #752165: D-Link DIR-823X 250416 OS Command Injection (by junqi)
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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