CVE-2025-4731 TOTOLINK A3002R/A3002RU HTTP POST Request formPortFw buffer overflow
Remote attackers can trigger a buffer overflow in TOTOLINK routers via crafted HTTP POST requests, 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-2025-4731?
CVE-2025-4731 is a high-severity memory corruption vulnerability in Totolink A3002r 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 classified as critical has been found in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This affects an unknown part of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type/ip_subnet 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-2025-4731?
It affects 2 products.
Products include Totolink A3002r Firmware, Totolink A3002ru Firmware.
How do I fix CVE-2025-4731?
No fix has been published for CVE-2025-4731 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-2025-4731 being exploited?
There is no known exploitation of CVE-2025-4731 in the wild and no public exploit code.
Other vulnerabilities in Totolink A3002r Firmware
Sources
Also known as GHSA-7pjr-pgpp-7jxm.