CVE-2026-7503 code-projects for Plugin cstecgi.cgi setWiFiMultipleConfig buffer overflow
Remote attackers can trigger a buffer overflow in the WiFi configuration handler to execute arbitrary code on affected IoT devices.
- 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-2026-7503?
CVE-2026-7503 is a high-severity memory corruption vulnerability in code-projects for Plugin, published on 30 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in code-projects for Plugin 4.1.2cu.5137. The impacted element is the function setWiFiMultipleConfig in the library /lib/cste_modules/wireless.so of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument wepkey2 results in buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-7503?
How do I fix CVE-2026-7503?
No fix has been published for CVE-2026-7503 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-2026-7503 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7503 exists.
Sources
Also known as GHSA-f3fc-3r4q-r873.