CVE-2026-11834
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
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.
Risk Assessment
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.
Recommendation
It is recommended to immediately apply the firmware update provided by the manufacturer for the affected TP-Link router models. Until the update is applied, restrict physical access to the devices and ensure they are configured before connecting to the network.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS