Vulnerability · Published Apr 6, 2026 · Assigned by VulDB
CVE-2026-5679Totolink A3300R cstecgi.cgi vsetTr069Cfg os command injection
Medium 5.5
In plain English
A medium-severity OS command injection in A3300R from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)2.0%top 19.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-78, CWE-77 · Vector: 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
References
- VDB-355506 | Totolink A3300R cstecgi.cgi vsetTr069Cfg os command injection vdb-entry, technical-description
- 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
- https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injection exploit
- https://www.totolink.net/ product