Buffer overflow in Trendnet Tew-432brp
CVE-2026-109157
A vulnerability was found in TRENDnet TEW-432BRP 3.10B20. Affected by this vulnerability is the function formTcpipSetup of the file /goform/formTcpipSetup. Performing a manipulation of the argument Name results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could 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: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/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 Tew-432brp — versions 3.10B20
Weakness classification (CWE)
References
- vuldb.com/vuln/416890 (technical-description, vdb-entry)
- vuldb.com/vuln/416890/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-109157 (third-party-advisory)
- vuldb.com/submit/979590 (third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/TRENDnet/vuln_21/21.md (exploit)
Frequently asked questions
- What is CVE-2026-109157?
- CVE-2026-109157 is a critical-severity vulnerability in Trendnet Tew-432brp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.9/10. Published 2026-10-13.
- How severe is CVE-2026-109157?
- Critical severity. CVSS v3 base score is 9.9 out of 10.