CVE-2026-11834
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://www.tp-link.com/en/support/download/archer-c20/
- https://www.tp-link.com/en/support/download/archer-mr200/#Firmware
- https://www.tp-link.com/en/support/download/archer-mr402/#Firmware
- https://www.tp-link.com/en/support/download/archer-vr2100/#Firmware
- https://www.tp-link.com/en/support/download/tl-mr6400/v7/#Firmware
- https://www.tp-link.com/us/support/download/archer-c20/
- https://www.tp-link.com/us/support/faq/5141/
CWEs
CWE-78
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.