CVE-2026-75784 TRENDnet TEW-WLC100 HTTP Header nginx FUN_0040da4c stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the nginx HTTP header handler of TRENDnet TEW-WLC100 devices, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75784?
CVE-2026-75784 is a critical memory corruption vulnerability in TRENDnet TEW-WLC100, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-75784?
How do I fix CVE-2026-75784?
No fix has been published for CVE-2026-75784 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-75784 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75784 exists.
Sources
Also known as GHSA-xvh6-w8q3-q5g8.