CVE-2026-28520 arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
Attacker executes arbitrary code on Tuya smart devices by exploiting a buffer overflow in the WiFiMulti component during AP connection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-28520?
CVE-2026-28520 is a high-severity memory corruption vulnerability in arduino-TuyaOpen, published on 15 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
arduino-TuyaOpen before version 1.2.1 contains a single-byte buffer overflow vulnerability in the WiFiMulti component. When the victim's smart hardware connects to an attacker-controlled AP hotspot, the attacker can exploit the overflow to execute arbitrary code on the affected embedded device.
Weakness: CWE-193
Which versions are affected by CVE-2026-28520?
It affects 1 product.
Products include Tuya Arduino-Tuyaopen.
How do I fix CVE-2026-28520?
No fix has been published for CVE-2026-28520 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-2026-28520 being exploited?
There is no known exploitation of CVE-2026-28520 in the wild and no public exploit code.
Other vulnerabilities in arduino-TuyaOpen
Sources
Also known as GHSA-3w55-cqrx-x67w.