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 injection. The exploit has been disclosed publicly and may be used.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.025 (84.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.025 · change: +0.007
Affected products
- Totolink A3300r — versions 17.0.0cu.557_B20221024
Weakness classification (CWE)
References
- vuldb.com/vuln/355506 (technical-description, vdb-entry)
- vuldb.com/vuln/355506/cti (signature, permissions-required)
- vuldb.com/submit/792650 (third-party-advisory)
- vuldb.com/submit/792798 (third-party-advisory)
- github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injecti… (exploit)
- www.totolink.net/ (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.