CVE-2026-11834— Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers

Quick assessment

Affected

TP-Link Systems Inc. Archer MR200 v07

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TP-Link mr200是中国TP-Link公司的一款无线路由器。 TP-Link MR200存在命令注入漏洞，该漏洞源于对DHCP选项数据验证不足，可能导致相邻未经身份验证的攻击者通过特制DHCP响应，在设备初始化或配置过程中执行任意命令并提升权限，从而完全控制受影响的设备。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.66% · P52 Updated Jul 02, 2026

In-the-Wild Activity Observed github_trending · low

Possible ATT&CK Techniques 2 AI

T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

Vendor	Product	Version Range	Status
TP Link Systems Inc.	Archer MR402 v1	`< 1.5.0 Build 260605`	affected
TP-Link Systems Inc.	Archer C20 v5	`< EU_V5_260317`	affected
		`< US_V5_260419`	affected
TP-Link Systems Inc.	Archer C20 v6	`< V6_260608`	affected
TP-Link Systems Inc.	Archer MR200 v07	`< 1.3.0 Build 250605`	affected
TP-Link Systems Inc.	Archer MR200 v8	`< 1.5.0 Build 260605`	affected
TP-Link Systems Inc.	Archer VR2100 v1	`< EU_V1_260330`	affected
TP-Link Systems Inc.	TL-MR6400 v7	`< 1.7.0 Build 260413`	affected

Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-11834

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

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

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

OS命令中使用的特殊元素转义处理不恰当(OS命令注入)

Source: CVE Program / CVE List V5

Vulnerability Title

TP-Link MR200 命令注入漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE
TP-Link Systems Inc.	Archer MR200 v07	0 ~ 1.3.0 Build 250605	-
TP-Link Systems Inc.	Archer MR200 v8	0 ~ 1.5.0 Build 260605	-
TP Link Systems Inc.	Archer MR402 v1	0 ~ 1.5.0 Build 260605	-
TP-Link Systems Inc.	Archer VR2100 v1	0 ~ EU_V1_260330	-
TP-Link Systems Inc.	Archer C20 v5	0 ~ EU_V5_260317	-
TP-Link Systems Inc.	Archer C20 v6	0 ~ V6_260608	-
TP-Link Systems Inc.	TL-MR6400 v7	0 ~ 1.7.0 Build 260413	-