Medium 5.5Published Apr 6, 2026

CVE-2026-5679Totolink A3300R cstecgi.cgi vsetTr069Cfg os command injection

Updated under an hour ago (Oct 26, 2026, 4:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Totolink A3300R

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Weakness (CWE): CWE-78, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Apr 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Totolink A3300R totolink:a3300r_firmware	17.0.0cu.557_B20221024	CNA record

References

https://vuldb.com/vuln/355506vdb-entry, technical-description
https://vuldb.com/vuln/355506/ctisignature, permissions-required
https://vuldb.com/submit/792650third-party-advisory
https://vuldb.com/submit/792798third-party-advisory
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injectionexploit
https://www.totolink.net/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.