CVE-2025-7913 TOTOLINK T6 MQTT Service updateWifiInfo buffer overflow
Remote attackers can trigger a buffer overflow in the MQTT service via the serverIp argument, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-7913?
CVE-2025-7913 is a high-severity memory corruption vulnerability in TOTOLINK T6, published on 20 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Which versions are affected by CVE-2025-7913?
It affects 1 product.
Products include Totolink T6 Firmware.
How do I fix CVE-2025-7913?
No fix has been published for CVE-2025-7913 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-7913 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7913 exists.
Other vulnerabilities in TOTOLINK T6
Sources
Also known as GHSA-p5w7-xqf9-725m.