Vulnerability · Published Mar 31, 2026 · Assigned by VulDB
CVE-2026-5178Totolink A3300R cstecgi.cgi setIptvCfg command injection
Medium 6.3
In plain English
A medium-severity 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 4.1% (higher than 91% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)4.1%top 9.2% 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. Affected by this issue is the function setIptvCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument vlanPriLan3 leads to command injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
Affected products (as reported)
Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-354246 | Totolink A3300R cstecgi.cgi setIptvCfg command injection vdb-entry, technical-description
- VDB-354246 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #779147 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection third-party-advisory
- https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_vlanPriLan3_cmd_inject exploit
- https://www.totolink.net/ product