CVE-2025-8170
TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 25, 2025
- Updated
- Jul 28, 2025
- Reserved
- Jul 25, 2025
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulDB |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 3.0 | 8.8 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 2.0 | 9.0 High | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
T6TOTOLINK |
|
References
- VDB-317584 | TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net buffer overflowvdb-entrytechnical-description
- VDB-317584 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #620834 | TOTOLINK T6 V4.1.5cu.748_B20211015 Buffer Overflowthird-party-advisory
- https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/9.mdrelated
- https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/9.md#pocexploit
- https://www.totolink.net/product
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