CVE-2026-28521

High

Description

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.

SeverityHigh

CVSS7.7

Exploit probability—

ProductArduino-tuyaopen

PublishedMar 16, 2026

First seenMar 16, 2026

Weakness typeCWE-125Out-of-bounds read

How to fix

Update

tuya arduino-tuyaopen1.2.1 or later

Vendor advisories

src.tuya.com/announcement/32

Affected products

Product	Affected versions	Fixed in
tuya arduino-tuyaopen	v < 1.2.1	1.2.1

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