RCE in Trendnet Tew733gr
CVE-2026-108804
A vulnerability was detected in TRENDnet TEW-751DR, TEW-752DRU and TEW733GR 1.03B01/1.03B03. Affected is the function fwrite of the file pigwidgeon.cgi of the component Web Management Backend. The manipulation of the argument service results in os command injection. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor confirms: "As this router was EOL'd in 2011, we have no way of testing if such vulnerability exists. We will notify our customers of a potential vulnerability on this product." This vulnerability only affects products that are no longer supported by the maintainer.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Trendnet Tew733gr — versions 1.03B01, 1.03B03
- Trendnet Tew-751dr — versions 1.03B01, 1.03B03
- Trendnet Tew-752dru — versions 1.03B01, 1.03B03
Weakness classification (CWE)
References
- vuldb.com/vuln/416581 (technical-description, vdb-entry)
- vuldb.com/vuln/416581/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-108804 (third-party-advisory)
- vuldb.com/submit/962770 (third-party-advisory)
- github.com/dacj4n/TRENDNetExploits (exploit)
- github.com/dacj4n/TRENDNetExploits/tree/main/exploit (exploit)
Frequently asked questions
- What is CVE-2026-108804?
- CVE-2026-108804 is a critical-severity vulnerability in Trendnet Tew733gr, classified under Command Injection. CVSS score: 10.0/10. Published 2026-10-12.
- How severe is CVE-2026-108804?
- Critical severity. CVSS v3 base score is 10.0 out of 10.