CVE-2025-4827 TOTOLINK A702R/A3002R/A3002RU HTTP POST Request formSaveConfig buffer overflow
Remote attackers can trigger a buffer overflow in TOTOLINK routers via HTTP POST requests, potentially leading to arbitrary code execution.
- 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-2025-4827?
CVE-2025-4827 is a high-severity memory corruption vulnerability in Totolink A3002r Firmware, published on 17 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability, which was classified as critical, was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. Affected is an unknown function of the file /boafrm/formSaveConfig of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to 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-2025-4827?
It affects 3 products.
Products include Totolink A3002r Firmware, Totolink A3002ru Firmware, Totolink A702r Firmware.
How do I fix CVE-2025-4827?
No fix has been published for CVE-2025-4827 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-2025-4827 being exploited?
There is no known exploitation of CVE-2025-4827 in the wild and no public exploit code.
Other vulnerabilities in Totolink A3002r Firmware
Sources
Also known as GHSA-fmqv-vc53-6mwm.