CVE-2026-28519 arduino-TuyaOpen DnsServer Heap-Based Buffer Overflow Remote Code Execution
A heap-based buffer overflow in the DnsServer component allows remote code execution on affected Tuya IoT devices via malicious DNS responses.
- 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-2026-28519?
CVE-2026-28519 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 heap-based buffer overflow vulnerability in the DnsServer component. An attacker on the same local area network who controls the LAN DNS server can send malicious DNS responses to overflow the heap buffer, potentially allowing execution of arbitrary code on affected embedded devices.
Weakness: CWE-122
Which versions are affected by CVE-2026-28519?
It affects 1 product.
Products include Tuya Arduino-Tuyaopen.
How do I fix CVE-2026-28519?
No fix has been published for CVE-2026-28519 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-2026-28519 being exploited?
There is no known exploitation of CVE-2026-28519 in the wild and no public exploit code.
Other vulnerabilities in arduino-TuyaOpen
Sources
Also known as GHSA-8gpj-j2h5-7993.