CVE-2026-11834

Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers

Published Jun 22, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Tp-link
Tp-link archer C20 V5
Tp-link archer C20 V6
Tp-link archer Mr200 V07
Tp-link archer Mr200 V8
Tp-link archer Vr2100 V1
Tp-link tl-mr6400 V7
Tp Link
Tp Link archer Mr402 V1
Vendors & Products Tp-link
Tp-link archer C20 V5
Tp-link archer C20 V6
Tp-link archer Mr200 V07
Tp-link archer Mr200 V8
Tp-link archer Vr2100 V1
Tp-link tl-mr6400 V7
Tp Link
Tp Link archer Mr402 V1
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TPLink
Published
Updated
Jun 26, 2026, 9:14 PM
Reserved
Jun 9, 2026, 10:14 PM
Status
Awaiting Analysis
Published
Jun 22, 2026, 7:16 PM
Modified
Jun 26, 2026, 10:16 PM