CVE-2025-7747 Tenda FH451 POST Request WizardHandle fromWizardHandle buffer overflow
A remote attacker can trigger a buffer overflow in the Tenda FH451 router via a crafted POST request, 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-2025-7747?
CVE-2025-7747 is a high-severity memory corruption vulnerability in Tenda FH451, published on 17 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability classified as critical has been found in Tenda FH451 1.0.0.9. This affects the function fromWizardHandle of the file /goform/WizardHandle of the component POST Request Handler. The manipulation of the argument PPW leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-7747?
It affects 1 product.
Products include Tenda Fh451 Firmware.
How do I fix CVE-2025-7747?
No fix has been published for CVE-2025-7747 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-2025-7747 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7747 exists.
Other vulnerabilities in Tenda FH451
Sources
Also known as GHSA-422g-xm87-cghv.