CVE-2025-8170 HIGH

CVE-2025-8170: TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net buffer overflow

Vendor Totolink
Product T6
Weakness CWE-120
Published July 25, 2025
Last update July 28, 2025
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability classified as critical was found in TOTOLINK T6 4.1.5cu.748_B20211015. This vulnerability affects the function tcpcheck_net of the file /router/meshSlaveDlfw of the component MQTT Packet Handler. The manipulation of the argument serverIp leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Key dates

02Disclosure timeline

July 25, 2025 CVE published
July 28, 2025 Record updated