CVE-2025-7912: TOTOLINK T6 MQTT Service recvSlaveUpgstatus buffer overflow

Published Jul 20, 2025
·
Updated

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 4.1.5cu.748B20211015. 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.

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 20, 2025
CVE Published
via MITRE·11:02 PM
Data Sourced
via MITRE·11:02 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·11:15 PM
DescriptionSeverityWeaknessAffected Software
Jun 20, 58473
Event
via NVD·07:36 PM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2025-7912?

CVE-2025-7912 is classified as a critical vulnerability.

2

How does CVE-2025-7912 affect TOTOLINK T6?

CVE-2025-7912 affects the MQTT Service component, specifically the recvSlaveUpgstatus function, leading to a buffer overflow.

3

What can an attacker do with CVE-2025-7912?

An attacker can exploit CVE-2025-7912 to initiate a remote attack that may compromise the device.

4

What versions of the TOTOLINK T6 are affected by CVE-2025-7912?

CVE-2025-7912 affects TOTOLINK T6 running version 4.1.5cu.748_B20211015.

5

How can I mitigate the risk associated with CVE-2025-7912?

To mitigate the risk, users should apply the latest security patches provided by TOTOLINK for the affected version.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203