CVE-2026-75784: TRENDnet TEW-WLC100 HTTP Header nginx FUN_0040da4c stack-based overflow

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-18 · updated 2026-10-22
Weakness: CWE-119

Description

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.

Affected products

TRENDnet TEW-WLC100: 1v2.07b01

References

https://github.com/meishigana/CVE/blob/main/team15_20260702/02_wlc100-nginx/poc/poc-nginx-overflow.py
https://github.com/meishigana/CVE/tree/main/team15_20260702/02_wlc100-nginx
https://vuldb.com/cve/CVE-2026-75784
https://vuldb.com/submit/877773
https://vuldb.com/vuln/391525
https://vuldb.com/vuln/391525/cti

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