RCE in Totolink A3300r
CVE-2026-5104
A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557_b20221024. Impacted is the function setStaticRoute of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument ip leads to command injection. The attack may…
EPSS: 0.007 (72.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Totolink A3300r — versions 17.0.0cu.557_b20221024
- Totolink A3300r_firmware — versions 17.0.0cu.557_b20221024
Weakness classification (CWE)
References
- VDB-354129 | Totolink A3300R cstecgi.cgi setStaticRoute command injection (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-354129 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required, Third Party Advisory, VDB Entry)
- Submit #779142 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection (Permissions Required, VDB Entry, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2026-5104?
- CVE-2026-5104 is a medium-severity vulnerability in Totolink A3300r, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-30.
- How severe is CVE-2026-5104?
- Medium severity. CVSS v3 base score is 6.3 out of 10.