CVE-2026-93740 Totolink A3002MU formWlEncrypt buffer overflow
Remote attackers can exploit a buffer overflow in the Totolink A3002MU router's formWlEncrypt function to potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93740?
CVE-2026-93740 is a critical memory corruption vulnerability in Totolink A3002MU, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in Totolink A3002MU Hh-B20211125.1046. Affected is the function formWlEncrypt of the file /boafrm/formWlEncrypt. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-93740?
How do I fix CVE-2026-93740?
No fix has been published for CVE-2026-93740 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-2026-93740 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93740 exists.
Sources
Also known as GHSA-p889-mw66-wfh2.