What’s Vulnerable › Vulnerabilities

CVE-2025-8170: TOTOLINK T6 MQTT Packet meshSlaveDlfw tcpcheck_net 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: 2025-07-25 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability classified as critical was found in TOTOLINK T6 4.1.5cu.748_B20211015. This vulnerability affects the function tcpcheck_net of the file /router/meshSlaveDlfw of the component MQTT Packet Handler. The manipulation of the argument serverIp leads to buffer overflow. The attack can be initiated 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/9.md
• https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/9.md#poc
• https://vuldb.com/?ctiid.317584
• https://vuldb.com/?id.317584
• https://vuldb.com/?submit.620834
• https://www.totolink.net/

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