CVE-2026-13563 Edimax EW-7478APC POST Request formL2TPSetup stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the L2TP setup handler of Edimax access points, 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-2026-13563?
CVE-2026-13563 is a high-severity memory corruption vulnerability in Edimax EW-7478APC, published on 29 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Edimax EW-7478APC 1.04. This impacts the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. Such manipulation of the argument L2TPUserName leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-13563?
How do I fix CVE-2026-13563?
No fix has been published for CVE-2026-13563 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-2026-13563 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13563 exists.
Sources
Also known as GHSA-2fx5-835p-hm49.