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Description

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A vulnerability was found in TOTOLINK N350R 1.2.3-B20130826. This issue affects the function formSysTel of the file /boafrm/formSysTel of the component Telnet Service. The manipulation of the argument TelEnabled leads to backdoor. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Es geht hierbei um die Funktion formSysTel der Datei /boafrm/formSysTel der Komponente Telnet Service. Durch Beeinflussen des Arguments TelEnabled mit unbekannten Daten kann eine backdoor-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk angegangen werden. Der Exploit steht zur öffentlichen Verfügung.

PUBLISHED Reserved 2025-08-13 | Published 2025-08-14 | Updated 2025-08-15 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:W/RC:UR

Problem types

Backdoor

Product status

1.2.3-B20130826
affected

Timeline

2025-08-13:Advisory disclosed
2025-08-13:VulDB entry created
2025-08-13:VulDB entry last update

Credits

rew1X (VulDB User) reporter

References

vuldb.com/?id.319901 (VDB-319901 | TOTOLINK N350R Telnet Service formSysTel backdoor) vdb-entry technical-description

vuldb.com/?ctiid.319901 (VDB-319901 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.631837 (Submit #631837 | TOOLINK N350R V1.2.3-B20130826 Backdoor) third-party-advisory

github.com/...VE/blob/main/TOTOLINK/formSysTel/formSysTel.md related

github.com/...VE/blob/main/TOTOLINK/formSysTel/formSysTel.md exploit

www.totolink.net/ product

cve.org (CVE-2025-8938)

nvd.nist.gov (CVE-2025-8938)

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