CVE-2026-8234 EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the WifiBasicSet form, potentially executing arbitrary code on the 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-2026-8234?
CVE-2026-8234 is a high-severity memory corruption vulnerability in EFM ipTIME A8004T, published on 10 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in EFM ipTIME A8004T 14.18.2. This vulnerability affects the function formWifiBasicSet of the file /goform/WifiBasicSet. The manipulation of the argument security_5g leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly 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-2026-8234?
How do I fix CVE-2026-8234?
No fix has been published for CVE-2026-8234 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-2026-8234 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8234 exists.
Sources
Also known as GHSA-hhfg-q3j6-485j.