CVE-2026-11834 Details
Description
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. Successful exploitation may allow an adjacent, unauthenticated attacker to execute arbitrary commands with elevated privileges, potentially leading to full compromise of the affected device and unauthorized administrative control.
A command injection vulnerability has been identified in the DHCP option processing logic of several TP-Link router models. This vulnerability arises from inadequate validation of externally supplied DHCP option data. An adjacent attacker could exploit this issue by sending crafted DHCP responses, potentially leading to unauthorized command execution during the device's initialization or provisioning processes. Such exploitation is most likely when the device is in a factory-default or unconfigured state. Successful exploitation may allow an adjacent, unauthenticated attacker to execute arbitrary commands with elevated privileges, possibly resulting in a complete compromise of the affected device and unauthorized administrative control.
Users are advised to update their devices to the latest firmware version that addresses this vulnerability. Instructions for downloading the firmware are available on the TP-Link website.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 22, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | TPLink |
Affected Products
No affected product data is available for this CVE.
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | CVE Modified | TPLink |
| Jun 23, 2026 | CVE Modified | CISA-ADP |
| Jun 22, 2026 | CVE Modified | CISA-ADP |
| Jun 22, 2026 | New CVE Received | TPLink |