RCE in Totolink A3300r
CVE-2026-5679
A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557_B20221024. The impacted element is the function vsetTr069Cfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument stun_pass leads to os command inject…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.003 (57.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Totolink A3300r — versions 17.0.0cu.557_B20221024
Weakness classification (CWE)
References
- VDB-355506 | Totolink A3300R cstecgi.cgi vsetTr069Cfg os command injection (technical-description, vdb-entry)
- VDB-355506 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
- Submit #792650 | Totolink A3300R V17.0.0cu.557_B20221024 OS Command Injection (third-party-advisory)
- Submit #792798 | Totolink A3300R V17.0.0cu.557_B20221024 OS Command Injection (Duplicate) (third-party-advisory)
- cna@vuldb.com (exploit)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-5679?
- CVE-2026-5679 is a medium-severity vulnerability in Totolink A3300r, classified under Command Injection. CVSS score: 5.5/10. Published 2026-04-06.
- How severe is CVE-2026-5679?
- Medium severity. CVSS v3 base score is 5.5 out of 10.