CVE-2026-93739 Totolink A3002MU formWlAc buffer overflow
Remote attackers can trigger a buffer overflow in the Totolink A3002MU router via the formWlAc interface, 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-2026-93739?
CVE-2026-93739 is a critical memory corruption vulnerability in Totolink A3002MU, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in Totolink A3002MU Hh-B20211125.1046. This impacts the function formWlAc of the file /boafrm/formWlAc. Executing a manipulation of the argument submit-url can lead to buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-93739?
How do I fix CVE-2026-93739?
No fix has been published for CVE-2026-93739 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-2026-93739 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93739 exists.
Sources
Also known as GHSA-8f83-mv8g-3hmr.