CVE-2026-4172 TRENDnet TEW-632BRP HTTP POST Request ping_response.cgi stack-based overflow
Remote attackers can execute arbitrary code via a stack-based buffer overflow in the ping_response.cgi handler of TRENDnet TEW-632BRP routers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4172?
CVE-2026-4172 is a high-severity memory corruption vulnerability in TRENDnet TEW-632BRP, published on 15 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability was detected in TRENDnet TEW-632BRP 1.010B32. This affects an unknown part of the file /ping_response.cgi of the component HTTP POST Request Handler. The manipulation of the argument ping_ipaddr results in stack-based buffer overflow. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-4172?
How do I fix CVE-2026-4172?
No fix has been published for CVE-2026-4172 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-2026-4172 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4172 exists.
Sources
Also known as GHSA-cc47-r5rv-rpvf.