CVE-2025-7862

Public Exploit
TOTOLINK T6 Telnet Service cstecgi.cgi setTelnetCfg missing authentication

Description

A vulnerability has been found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this vulnerability is the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument telnet_enabled with the input 1 leads to missing authentication. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Category

6.9
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Third-Party Advisory vuldb.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory vuldb.com
Affected: TOTOLINK T6
Published at:
Updated at:

References

Link Tags
https://vuldb.com/?id.316975 third party advisory vdb entry technical description
https://vuldb.com/?ctiid.316975 signature permissions required
https://vuldb.com/?submit.617643 vdb entry third party advisory
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md exploit related third party advisory
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md#poc-http exploit third party advisory
https://www.youtube.com/watch?v=XeKu3tfeSME exploit media coverage
https://www.totolink.net/ product

Frequently Asked Questions

What is the severity of CVE-2025-7862?
CVE-2025-7862 has been scored as a medium severity vulnerability.
How to fix CVE-2025-7862?
To fix CVE-2025-7862, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-7862 being actively exploited in the wild?
It is possible that CVE-2025-7862 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-7862?
CVE-2025-7862 affects TOTOLINK T6.
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