CVE-2025-7837 – TOTOLINK T6 MQTT Service Buffer Overflow Vulnerability

The following table lists the changes that have been made to the
CVE-2025-7837 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jul. 19, 2025

    Action Type Old Value New Value
    Added Description A vulnerability was found in TOTOLINK T6 4.1.5cu.748_B20211015 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.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CWE CWE-119
    Added CWE CWE-120
    Added Reference https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md
    Added Reference https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md#poc
    Added Reference https://vuldb.com/?ctiid.316940
    Added Reference https://vuldb.com/?id.316940
    Added Reference https://vuldb.com/?submit.617572
    Added Reference https://www.totolink.net/
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