QwikSec

Security Database

CVE

CWE

Training

CVE-2026-5102

Published: Mar 30, 2026

Modified: Mar 30, 2026

PUBLISHED

CVSS v3.1

6.3

MEDIUM

Description

A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Vendor	Product	Versions
Totolink	A3300R	affected `17.0.0cu.557_b20221024`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

References

VDB-354127 | Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection

vdb-entry

technical-description

VDB-354127 | CTI Indicators (IOB, IOC, TTP, IOA)

signature

permissions-required

Submit #779129 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection

third-party-advisory

https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.md

exploit

https://www.totolink.net/

product

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.