CVE-2026-5102

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.

• CWE-74
• CWE-77

• https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.mdExploit, Third Party Advisory
• https://vuldb.com/submit/779129Permissions Required, VDB Entry
• https://vuldb.com/vuln/354127Third Party Advisory, VDB Entry
• https://vuldb.com/vuln/354127/ctiThird Party Advisory, VDB Entry
• https://www.totolink.net/Product

Published

Mar 30, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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