CVE-2026-13564 Edimax EW-7478APC POST Request formPPPoESetup stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the PPPoE setup handler to execute arbitrary code on Edimax access points.
- 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-2026-13564?
CVE-2026-13564 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 was found in Edimax EW-7478APC 1.04. Affected is the function formPPPoESetup of the file /goform/formPPPoESetup of the component POST Request Handler. Performing a manipulation of the argument pppUserName results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-13564?
How do I fix CVE-2026-13564?
No fix has been published for CVE-2026-13564 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-2026-13564 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13564 exists.
Sources
Also known as GHSA-j79x-62f4-fvpw.