CVE-2026-109157 TRENDnet TEW-432BRP formTcpipSetup stack-based overflow
Remote attackers can execute arbitrary code via a stack-based buffer overflow in the TCP/IP setup form of this end-of-life router.
- 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-2026-109157?
CVE-2026-109157 is a critical memory corruption vulnerability in TRENDnet TEW-432BRP, published on 13 Oct 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-432BRP 3.10B20. Affected by this vulnerability is the function formTcpipSetup of the file /goform/formTcpipSetup. Performing a manipulation of the argument Name results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor confirms: "As this router was EOL'd in 2011, we have no way of testing if such vulnerability exists. We will notify our customers of a potential vulnerability on this product." This vulnerability only affects products that are no longer supported by the maintainer.
Which versions are affected by CVE-2026-109157?
How do I fix CVE-2026-109157?
No fix has been published for CVE-2026-109157 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-2026-109157 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109157 exists.
Sources
Also known as GHSA-6vrm-8cq2-whh8.