CVE-2026-6194 Totolink A3002MU HTTP Request formWlanSetup sub_410188 stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the HTTP request handler of Totolink A3002MU routers, potentially leading to arbitrary 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-2026-6194?
CVE-2026-6194 is a high-severity memory corruption vulnerability in Totolink A3002MU, published on 13 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A weakness has been identified in Totolink A3002MU B20211125.1046. Affected by this vulnerability is the function sub_410188 of the file /boafrm/formWlanSetup of the component HTTP Request Handler. This manipulation of the argument wan-url causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-6194?
How do I fix CVE-2026-6194?
No fix has been published for CVE-2026-6194 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-2026-6194 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6194 exists.
Sources
Also known as GHSA-wcjg-f74r-f452.