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

8.7 / 10

HIGH

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

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.

AI Analysis

Unauthenticated command injection vulnerability in TP-Link routers via DHCP option handling

Basic Information

ID CVE-2026-11834

Source TPLink

Published Jun 22, 2026 at 17:53

Modified Jun 22, 2026 at 18:25

Affected Product

Vendor TP-Link Systems Inc.

Product Archer MR200 v07

Affected Versions TP-Link Systems Inc. Archer MR200 v07 0
TP-Link Systems Inc. Archer MR200 v8 0
TP Link Systems Inc. Archer MR402 v1 0
TP-Link Systems Inc. Archer VR2100 v1 0
TP-Link Systems Inc. Archer C20 v5 0
TP-Link Systems Inc. Archer C20 v5 0
TP-Link Systems Inc. Archer C20 v6 0
TP-Link Systems Inc. TL-MR6400 v7 0

CWE Classification

CWE-78

AI Assessment

AI Score 8.7 / 10

AI Severity High

Vendor TP-Link

Product Archer series routers

Version v07, v08, v1.0, v5.0, v6.0, v7.0

References

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    "lastseen": "",
    "description": "A command\ninjection vulnerability has been identified in the DHCP option processing logic\nin multiple TP-Link router models, due to insufficient validation of externally\nsupplied DHCP option data.\u00a0An adjacent attacker may exploit this\nvulnerability by supplying crafted DHCP responses, potentially resulting in unauthorized\ncommand execution during device initialization or provisioning workflows. This\ntypically occurs when the device is in a factory-default or unconfigured state.\n\n\n\n\n\nSuccessful\nexploitation may allow an adjacent, unauthenticated attacker to execute\narbitrary commands with elevated privileges, potentially leading to full\ncompromise of the affected device and unauthorized administrative control.",
    "published": "2026-06-22T17:53:48.436Z",
    "modified": "2026-06-22T18:25:03.149Z",
    "type": "cve",
    "title": "Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers",
    "source": "TPLink",
    "references": "https://www.tp-link.com/en/support/download/archer-c20/\nhttps://www.tp-link.com/en/support/download/archer-mr402/#Firmware\nhttps://www.tp-link.com/en/support/download/archer-mr200/#Firmware\nhttps://www.tp-link.com/en/support/download/tl-mr6400/v7/#Firmware\nhttps://www.tp-link.com/en/support/download/archer-vr2100/#Firmware\nhttps://www.tp-link.com/us/support/download/archer-c20/\nhttps://www.tp-link.com/us/support/faq/5141/",
    "id": "CVE-2026-11834",
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    "cwe": [
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    "cvelist": null,
    "sourceData": "TP-Link Systems Inc. Archer MR200 v07 0\nTP-Link Systems Inc. Archer MR200 v8 0\nTP Link Systems Inc. Archer MR402 v1 0\nTP-Link Systems Inc. Archer VR2100 v1 0\nTP-Link Systems Inc. Archer C20 v5 0\nTP-Link Systems Inc. Archer C20 v5 0\nTP-Link Systems Inc. Archer C20 v6 0\nTP-Link Systems Inc. TL-MR6400 v7 0",
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    "cvss": {
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        "severity": "HIGH",
        "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",
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    "product": "Archer MR200 v07",
    "version": "0",
    "vendor": "TP-Link Systems Inc.",
    "ai_description": "Unauthenticated command injection vulnerability in TP-Link routers via DHCP option handling",
    "ai_severity": "High",
    "ai_vendor": "TP-Link",
    "ai_product": "Archer series routers",
    "ai_version": "v07, v08, v1.0, v5.0, v6.0, v7.0",
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Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers_CVE-2026-11834