Vulnerability · Published Jul 20, 2025 · Assigned by VulDB
CVE-2025-7913TOTOLINK T6 MQTT Service updateWifiInfo buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in T6 from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 37.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: 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
References
- VDB-317028 | TOTOLINK T6 MQTT Service updateWifiInfo buffer overflow vdb-entry, technical-description
- VDB-317028 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #618656 | TOTOLINK T6 V4.1.5cu.748_B20211015 Buffer Overflow third-party-advisory
- https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/7.md related
- https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/7.md#poc exploit
- https://www.totolink.net/ product