Description
A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015. Affected is the function updateWifiInfo of the component MQTT Service. The manipulation of the argument serverIp leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
References (6)
Core 6
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.317028
Permissions Required signature
permissions-required
https://vuldb.com/?ctiid.317028
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.618656
Exploit, Third Party Advisory related
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/7.md
Exploit, Third Party Advisory exploit
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/7.md#poc
Product product
https://www.totolink.net/
Scores
CVSS v3
8.8
EPSS
0.0060
EPSS Percentile
69.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-120
Status
published
Products (1)
totolink/t6_firmware
v4.1.5cu.748_b20211015
Published
Jul 21, 2025
Tracked Since
Feb 18, 2026