CVE-2025-4851 - CVE House

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Status published Medium CVE-2025-4851

TOTOLINK N300RH cstecgi.cgi setUploadUserData command injection

5.3 CVSS

Vulnerability Description

A vulnerability classified as critical was found in TOTOLINK N300RH 6.1c.1390_B20191101. This vulnerability affects the function setUploadUserData of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

DaddyShark (VulDB User)

References

More from TOTOLINK

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TOTOLINK N600R cstecgi.cgi sub_4159F8 command injection

TOTOLINK X5000R cstecgi.cgi sub_410C34 command injection

TOTOLINK A702R formParentControl sub_418030 buffer overflow

TOTOLINK A702R formOneKeyAccessButton sub_4466F8 buffer overflow

TOTOLINK A702R formFilter sub_4162DC buffer overflow

Affected Vendor

TOTOLINK

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Affected Software

N300RH

Vulnerable Versions:

6.1c.1390_B20191101

Timeline

Official Publish: May 18th, 2025

Last Modified: May 19th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1059 Command and Scripting Interpreter

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1105 Ingress Tool Transfer

Command and Control

T1562 Impair Defenses

Defense Evasion

T1213 Data from Information Repositories