What’s Vulnerable › Vulnerabilities

CVE-2025-7837: TOTOLINK T6 MQTT Service recvSlaveStaInfo buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-19 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• TOTOLINK T6: v4.1.5cu.748_b20211015

References

• https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md
• https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md#poc
• https://vuldb.com/?ctiid.316940
• https://vuldb.com/?id.316940
• https://vuldb.com/?submit.617572
• https://www.totolink.net/

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