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HIGH

CVE-2025-7912

TOTOLINK T6 MQTT Service recvSlaveUpgstatus buffer overflow

CVSS v3

8.8

HIGH

EPSS Score

1.1 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

poc

SSVC status

Description

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 4.1.5cu.748_B20211015. This issue affects the function recvSlaveUpgstatus of the component MQTT Service. The manipulation of the argument s leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Technical details

Published
2025-07-20
Last Modified
2025-07-23

Frequently asked questions

What is CVE-2025-7912?

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 4.1.5cu.748_B20211015. This issue affects the function recvSlaveUpgstatus of the component MQTT Service. The manipulation of the argument s leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Is CVE-2025-7912 actively exploited?

A proof-of-concept exploit exists for CVE-2025-7912, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-7912?

CVE-2025-7912 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2025-7912 affecting your environment?

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