RCE in Trendnet Tew-657brm
CVE-2026-5353
A vulnerability was detected in Trendnet TEW-657BRM 1.00.1. Affected is the function ping_test of the file /setup.cgi. Performing a manipulation of the argument c4_IPAddr results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor confirms, that "[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us." This vulnerability only affects products that are no longer supported by the maintainer.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.048 (91.0th 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
- Trendnet Tew-657brm — versions 1.00.1
- Trendnet Tew-657brm_firmware — versions 1.00.1
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-5353?
- CVE-2026-5353 is a medium-severity vulnerability in Trendnet Tew-657brm, classified under Command Injection. CVSS score: 6.3/10. Published 2026-04-02.
- How severe is CVE-2026-5353?
- Medium severity. CVSS v3 base score is 6.3 out of 10.