CVE-2025-7837: TOTOLINK T6 MQTT Service recvSlaveStaInfo buffer overflow
Published Jul 19, 2025
·Updated
A vulnerability was found in TOTOLINK T6 4.1.5cu.748B20211015 and classified as critical. Affected by this issue is the function recvSlaveStaInfo of the component MQTT Service. The manipulation of the argument dest leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
Affected Software
3 affected components
TOTOLINK T6
All of the following
TOTOLINK T6 Firmware=v4.1.5cu.748_b20211015
TOTOLINK T6=3
Event History
Jul 19, 2025
CVE Published
via MITRE·05:02 PM
Data Sourced
via MITRE·05:02 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software
Jun 22, 58473
Event
via NVD·03:11 PM
Frequently Asked Questions
1
What is the severity of CVE-2025-7837?
CVE-2025-7837 is classified as a critical vulnerability.
2
How can CVE-2025-7837 be exploited?
CVE-2025-7837 can be exploited remotely through a buffer overflow in the MQTT Service.
3
What component is affected by CVE-2025-7837?
CVE-2025-7837 affects the MQTT Service function recvSlaveStaInfo.
4
What type of vulnerability is CVE-2025-7837?
CVE-2025-7837 is a buffer overflow vulnerability.
5
What devices are impacted by CVE-2025-7837?
CVE-2025-7837 impacts the TOTOLINK T6 running versions up to 4.1.5cu.748_B20211015.