CVE-2025-4823 TOTOLINK A702R/A3002R/A3002RU HTTP POST Request formReflashClientTbl submit-url buffer overflow
Remote attackers can trigger a buffer overflow in TOTOLINK routers via 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-2025-4823?
CVE-2025-4823 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 was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. It has been rated as critical. Affected by this issue is the function submit-url of the file /boafrm/formReflashClientTbl of the component HTTP POST Request Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-4823?
It affects 3 products.
Products include Totolink A3002r Firmware, Totolink A3002ru Firmware, Totolink A702r Firmware.
How do I fix CVE-2025-4823?
No fix has been published for CVE-2025-4823 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-2025-4823 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4823 exists.
Other vulnerabilities in Totolink A3002r Firmware
Sources
Also known as GHSA-vp4m-3qw3-rfpq.