What’s Vulnerable › Vulnerabilities

CVE-2025-7758: TOTOLINK T6 HTTP POST Request cstecgi.cgi setDiagnosisCfg buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-17 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 up to 4.1.5cu.748_B20211015. Affected by this issue is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument ip 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/3.md
• https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/3.md#poc
• https://vuldb.com/?ctiid.316748
• https://vuldb.com/?id.316748
• https://vuldb.com/?submit.615734
• https://www.totolink.net/
• https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/3.md

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