CVE-2025-4809 Tenda AC7 setMacFilterCfg fromSafeSetMacFilter stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Tenda AC7 router's MAC filter configuration, 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-2025-4809?
CVE-2025-4809 is a high-severity memory corruption vulnerability in Tenda Ac7 Firmware, published on 16 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Tenda AC7 15.03.06.44. It has been classified as critical. Affected is the function fromSafeSetMacFilter of the file /goform/setMacFilterCfg. The manipulation of the argument deviceList leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-4809?
It affects 1 product.
Products include Tenda Ac7 Firmware.
How do I fix CVE-2025-4809?
No fix has been published for CVE-2025-4809 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-2025-4809 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4809 exists.
Other vulnerabilities in Tenda Ac7 Firmware
Sources
Also known as GHSA-fx39-f7f6-8prj.