CVE-2026-28522

arduino-TuyaOpen before version 1.2.1 contains a null pointer dereference vulnerability in the WiFiUDP component. An attacker on the same local area network can send a large volume of malicious UDP packets that trigger a null pointer dereference, resulting in a denial-of-service condition.

Score

CVSS 4.0 7.1 High

Status

Modified - disclosure@vulncheck.com

Published

2026-03-16

Last modified

2026-05-26

Weaknesses

CWE-476

Affected products

• Arduino-tuyaopen (Tuya)

References

• https://github.com/tuya/arduino-TuyaOpen
• https://src.tuya.com/announcement/32
• https://www.vulncheck.com/advisories/arduino-tuyaopen-wifiudp-null-pointer-dereference-denial-of-service