CVE-2025-8019 Shenzhen Libituo Technology LBT-T300-T310 appy.cgi sub_40B6F0 buffer overflow
Remote attackers can trigger a buffer overflow in the LBT-T300-T310 firmware via the wan_proto argument, potentially leading to 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-2025-8019?
CVE-2025-8019 is a high-severity memory corruption vulnerability in Shenzhen Libituo Technology LBT-T300-T310, published on 22 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Shenzhen Libituo Technology LBT-T300-T310 2.2.3.6. It has been rated as critical. Affected by this issue is the function sub_40B6F0 of the file at/appy.cgi. The manipulation of the argument wan_proto 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-2025-8019?
It affects 1 product.
Products include Szlbt Lbt-T300-T310 Firmware.
How do I fix CVE-2025-8019?
No fix has been published for CVE-2025-8019 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-2025-8019 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8019 exists.
Other vulnerabilities in Shenzhen Libituo Technology LBT-T300-T310
Sources
Also known as GHSA-h5f7-mrm3-48qc.