D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection
Published Feb 8, 2026 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
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.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- VDB-344857 | D-Link DIR-823X Configuration set_dmz sub_4208A0 os command injection ↗
- VDB-344857 | CTI Indicators (IOB, IOC, TTP, IOA) ↗
- Submit #748236 | D-Link DIR-823X 250416 OS Command Injection ↗
- Submit #750038 | D-Link DIR-823X 250416 OS Command Injection (Duplicate) ↗
- Source repository ↗
- www.dlink.com ↗
Record history
Published Feb 8, 2026 · Last refreshed Nov 3, 2026