RCE in Totolink A3600r
CVE-2026-5020
A vulnerability was detected in Totolink A3600R 4.1.2cu.5182_B20201102. Affected by this issue is the function setNoticeCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument NoticeUrl res…
EPSS: 0.019 (83.7th 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 A3600r — versions 4.1.2cu.5182_B20201102
- Totolink A3600r_firmware — versions 4.1.2cu.5182_b20201102
Weakness classification (CWE)
References
- VDB-353905 | Totolink A3600R Parameter cstecgi.cgi setNoticeCfg command injection (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-353905 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #779536 | TOTOLINK A3600R A3600R V4.1.2cu.5182_B20201102 Command Injection (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2026-5020?
- CVE-2026-5020 is a medium-severity vulnerability in Totolink A3600r, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-29.
- How severe is CVE-2026-5020?
- Medium severity. CVSS v3 base score is 6.3 out of 10.