CVE-2026-76589 TRENDnet TEW-755AP mycli FUN_401000 stack-based overflow
A remote stack-based buffer overflow in the mycli utility allows attackers to execute arbitrary code on TRENDnet TEW-755AP devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76589?
CVE-2026-76589 is a critical memory corruption vulnerability in TRENDnet TEW-755AP, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in TRENDnet TEW-755AP up to 20260702. Affected is the function FUN_401000 of the file /sbin/mycli. The manipulation of the argument ssid results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-76589?
How do I fix CVE-2026-76589?
No fix has been published for CVE-2026-76589 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-2026-76589 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76589 exists.
Sources
Also known as GHSA-qjr2-7w3m-c4fr.