CVE-2026-76590 TRENDnet TEW-755AP ssi wan.cgi stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the WAN configuration interface of TRENDnet TEW-755AP devices, potentially leading to arbitrary code execution.
- 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-2026-76590?
CVE-2026-76590 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 identified in TRENDnet TEW-755AP up to 20260702. Affected by this issue is some unknown functionality of the file /cgi-bin/wan.cgi of the component ssi. Such manipulation of the argument cameo.wan.wan_pppoe_password_00 leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-76590?
How do I fix CVE-2026-76590?
No fix has been published for CVE-2026-76590 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-2026-76590 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76590 exists.
Sources
Also known as GHSA-8258-pcm7-hvmv.