CVE-2025-63457 Memory corruption in n/a
Attackers can cause a Denial of Service on Tenda AX-1803 routers via a crafted request exploiting a stack overflow in the wanMTU parameter.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-63457?
CVE-2025-63457 is a medium-severity memory corruption vulnerability in Tenda Ax1803 Firmware, published on 10 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Tenda AX-1803 v1.0.0.1 was discovered to contain a stack overflow via the wanMTU parameter in the sub_4F55C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
Which versions are affected by CVE-2025-63457?
It affects 1 product.
Products include Tenda Ax1803 Firmware.
How do I fix CVE-2025-63457?
No fix has been published for CVE-2025-63457 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-2025-63457 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63457 exists.
Other vulnerabilities in Tenda Ax1803 Firmware
Sources
Also known as GHSA-q4r3-m48v-fh5v.