CVE-2026-5105

A vulnerability was detected in Totolink A3300R 17.0.0cu.557_b20221024. The affected element is the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument pptpPassThru results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

• CWE-74
• CWE-77
• CWE-77

• https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_pptpPassThru_cmd_injectExploit, Third Party Advisory
• https://vuldb.com/submit/779143Permissions Required, VDB Entry
• https://vuldb.com/vuln/354130Third Party Advisory, VDB Entry
• https://vuldb.com/vuln/354130/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.
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