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CVE-2026-102814— Improper Authentication in TP-Link TDDP v2 Allows Root Command Execution in TP-Link RE305

Quick assessment

Affected

TP-Link Systems Inc. RE305 v3

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 RE305 V3 设备的 TDDP v2 服务中存在身份验证缺陷。TDDP v2 使用一个固定且可推导的加密密钥，这使得同一本地网络上的未认证攻击者能够伪造协议数据包，并访问特权 TDDP 操作。当 TDDP 服务运行且可访问时，这些操作可能导致操作系统命令的执行。成功利用该漏洞后，同一局域网内的未认证攻击者能够以 root 权限执行任意系统命令。

CVSS 8.7 · High Updated Oct 28, 2026

Possible ATT&CK Techniques 3 AI

T1068 · Exploitation for Privilege Escalation T1059.004 · Unix Shell T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

Vendor	Product	Version Range	Status
TP-Link Systems Inc.	RE305 v3	`< 1.1.8 Build 20260921 Rel. 42853`	affected

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Vulnerability Information

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Vulnerability Title

Improper Authentication in TP-Link TDDP v2 Allows Root Command Execution in TP-Link RE305

Source: CVE Program / CVE List V5

Vulnerability Description

An authentication weakness exists in the TP-Link TDDP v2 service of TP-Link RE305 V3. TDDP v2 uses a fixed and derivable cryptographic key, which may allow an unauthenticated attacker on the same local network to forge protocol packets and access privileged TDDP operations, including functionality that can lead to operating-system command execution when the TDDP service is running and accessible. Successful exploitation may allow an unauthenticated attacker on the same local area network to execute arbitrary system commands with root privileges.

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

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
TP-Link Systems Inc.	RE305 v3	0 ~ 1.1.8 Build 20260921 Rel. 42853	-

II. Public POCs for CVE-2026-102814

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-102814

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Other References for CVE-2026-102814 (3)

https://www.tp-link.com/us/support/faq/5362/ vendor-advisory
https://www.tp-link.com/us/support/download/re305/v3/#Firmware patch
https://www.tp-link.com/en/support/download/re305/v3/#Firmware patch

https://www.cve.org/CVERecord?id=CVE-2026-102814

Same Patch Batch · TP-Link Systems Inc. · 2026-10-27 · 5 CVEs total

CVE-2026-102815	6.9 MEDIUM	Command Injection in tmpServer Allows Local Privilege Escalation in TP-Link RE305
CVE-2026-102812	6.9 MEDIUM	Hardcoded AES-128 Key and Fixed IV in Configuration Backup Encryption in TP-Link RE305 and
CVE-2026-102813	6.1 MEDIUM	Administrator Password Reset Through the Verification-Code Interface in TP-Link RE305
CVE-2026-102816	5.3 MEDIUM	Unauthenticated Wireless Regulatory Region Configuration in TP-Link RE305

IV. Related Vulnerabilities

Same product: RE305 v3

Same vendor: TP-Link Systems Inc.

Same weakness: CWE-78