CVE-2025-8170: t6 Buffer Overflow — Exploit

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.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
totolink	t6_firmware	All
totolink	t6	All

References

Exploits

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

Other References

https://vuldb.com/?ctiid.317584 https://vuldb.com/?id.317584 https://vuldb.com/?submit.620834 https://www.totolink.net/

Frequently Asked Questions

What is CVE-2025-8170? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-8170? +

CVE-2025-8170 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-8170? +

CVE-2025-8170 affects products from totolink, specifically: t6, t6_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8170? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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