CVE-2026-11504 Tenda CX12L Wi-Fi Schedule Configuration Endpoint openSchedWifi setSchedWifi stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Wi-Fi schedule configuration endpoint, potentially leading to code execution or denial of service.
- 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-2026-11504?
CVE-2026-11504 is a high-severity memory corruption vulnerability in Tenda CX12L, published on 8 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in Tenda CX12L 16.03.53.12. The impacted element is the function setSchedWifi of the file /goform/openSchedWifi of the component Wi-Fi Schedule Configuration Endpoint. Performing a manipulation of the argument schedStartTime/schedEndTime results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-11504?
How do I fix CVE-2026-11504?
No fix has been published for CVE-2026-11504 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-2026-11504 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11504 exists.
Sources
Also known as GHSA-pjjg-3c99-jj57.