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.

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)

EPSS: 0.017 (75.5th 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

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (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.