Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers
Published Jun 22, 2026 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A command injection vulnerability has been identified in the DHCP option processing logic in multiple TP-Link router models, due to insufficient validation of externally supplied DHCP option data. An adjacent attacker may exploit this vulnerability by supplying crafted DHCP responses, potentially resulting in unauthorized command execution during device initialization or provisioning workflows. This typically occurs when the device is in a factory-default or unconfigured state.
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
- LOW
- 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
- www.tp-link.com ↗
- www.tp-link.com ↗
- www.tp-link.com ↗
- www.tp-link.com ↗
- www.tp-link.com ↗
- www.tp-link.com ↗
- www.tp-link.com ↗
- mattg.systems ↗
Record history
Published Jun 22, 2026 · Last refreshed Nov 3, 2026