Buffer overflow in Trendnet Tew-Wlc100
CVE-2026-75784
A vulnerability was detected in TRENDnet TEW-WLC100 1v2.07b01. Affected by this issue is the function FUN_0040da4c of the file /usr/nginx/sbin/nginx of the component HTTP Header Handler. The manipulation of the argument Server results in stack-based buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.
Vulnerability class: Buffer Overflow
Published · last modified .
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
EPSS: 0.011 (64.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.011 · change: +0.001
Affected products
- Trendnet Tew-Wlc100 — versions 1v2.07b01
Weakness classification (CWE)
References
- vuldb.com/vuln/391525 (technical-description, vdb-entry)
- vuldb.com/vuln/391525/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-75784 (third-party-advisory)
- vuldb.com/submit/877773 (third-party-advisory)
- github.com/meishigana/CVE/tree/main/team15_20260702/02_wlc100-nginx (related)
- github.com/meishigana/CVE/blob/main/team15_20260702/02_wlc100-nginx/poc/poc-ngi… (exploit)
Frequently asked questions
- What is CVE-2026-75784?
- CVE-2026-75784 is a critical-severity vulnerability in Trendnet Tew-Wlc100, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2026-08-18.
- How severe is CVE-2026-75784?
- Critical severity. CVSS v3 base score is 10.0 out of 10.