CVE-2026-6200 Tenda F456 webtypelibrary formwebtypelibrary stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Tenda F456 router via the webtypelibrary form, potentially leading to code execution or service disruption.
- 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-2026-6200?
CVE-2026-6200 is a high-severity memory corruption vulnerability in Tenda F456, published on 13 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in Tenda F456 1.0.0.5. The affected element is the function formwebtypelibrary of the file /goform/webtypelibrary. This manipulation of the argument menufacturer/Go causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-6200?
How do I fix CVE-2026-6200?
No fix has been published for CVE-2026-6200 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-2026-6200 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6200 exists.
Sources
Also known as GHSA-g92h-vg4v-w46f.