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THREATINT
PUBLISHED

CVE-2025-7862

TOTOLINK T6 Telnet Service cstecgi.cgi setTelnetCfg missing authentication



Description

EN DE

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.

In TOTOLINK T6 4.1.5cu.748_B20211015 wurde eine Schwachstelle gefunden. Sie wurde als kritisch eingestuft. Es geht um die Funktion setTelnetCfg der Datei /cgi-bin/cstecgi.cgi der Komponente Telnet Service. Durch Beeinflussen des Arguments telnet_enabled mit der Eingabe 1 mit unbekannten Daten kann eine missing authentication-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk erfolgen. Der Exploit steht zur öffentlichen Verfügung.

Reserved 2025-07-19 | Published 2025-07-20 | Updated 2025-07-20 | Assigner VulDB


MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R
HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R
7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:W/RC:UR

Problem types

Missing Authentication

Improper Authentication

Product status

4.1.5cu.748_B20211015
affected

Timeline

2025-07-19:Advisory disclosed
2025-07-19:VulDB entry created
2025-07-19:VulDB entry last update

Credits

reisen_1943 (VulDB User) reporter

References

vuldb.com/?id.316975 (VDB-316975 | TOTOLINK T6 Telnet Service cstecgi.cgi setTelnetCfg missing authentication) vdb-entry technical-description

vuldb.com/?ctiid.316975 (VDB-316975 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.617643 (Submit #617643 | TOTOLINK T6 V4.1.5cu.748_B20211015 Missing Authentication) third-party-advisory

github.com/...inBrian/Public/blob/main/Totolink T6/Vuln/5.md related

github.com/...inBrian/Public/blob/main/Totolink T6/Vuln/5.md exploit

www.youtube.com/watch?v=XeKu3tfeSME media-coverage

www.totolink.net/ product

cve.org (CVE-2025-7862)

nvd.nist.gov (CVE-2025-7862)

Download JSON

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