CVE-2026-28521: Tuya Arduino-Tuyaopen

High severity, CVSS 7.7. EPSS: 0.2% chance of exploitation in the next 30 days.

arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the TuyaIoT component. An attacker who hijacks or controls the Tuya cloud service can issue malicious DP event data to victim devices, causing out-of-bounds memory access that may result in information disclosure or a denial-of-service condition.

Affected products

• Tuya Arduino-Tuyaopen: before 1.2.1 (fixed in 1.2.1)

Published 2026-03-16. Last modified 2026-06-17.