CVE-2026-5102 MEDIUM

CVE-2026-5102: Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection

Vendor Totolink
Product A3300R
Weakness CWE-77
Published March 30, 2026
Last update March 30, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS: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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 30, 2026 CVE published
March 30, 2026 Record updated