CVE-2026-5102

HighCVSS 8.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-74 CWE-77

Affected software

Vendor	Product	Versions
Totolink	A3300R	17.0.0cu.557_b20221024

References

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

Timeline

Published: Mar 30, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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