CVE-2025-8137 TOTOLINK A702R HTTP POST Request formIpQoS buffer overflow
Remote attackers can trigger a buffer overflow in the TOTOLINK A702R router via a crafted HTTP POST request, 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-2025-8137?
CVE-2025-8137 is a high-severity memory corruption vulnerability in TOTOLINK A702R, published on 25 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formIpQoS of the component HTTP POST Request Handler. The manipulation of the argument mac leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-8137?
It affects 1 product.
Products include Totolink A702r Firmware.
How do I fix CVE-2025-8137?
No fix has been published for CVE-2025-8137 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-2025-8137 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8137 exists.
Other vulnerabilities in TOTOLINK A702R
- CVE-2025-9779 TOTOLINK A702R formFilter sub_4162DC buffer overflow
- CVE-2025-9780 TOTOLINK A702R formIpQoS sub_419BE0 buffer overflow
- CVE-2025-9781 TOTOLINK A702R formFilter sub_4162DC buffer overflow
- CVE-2025-9782 TOTOLINK A702R formOneKeyAccessButton sub_4466F8 buffer overflow
- CVE-2025-9783 TOTOLINK A702R formParentControl sub_418030 buffer overflow
Sources
Also known as GHSA-hc8w-46gq-hrcx.