CVE-2026-28521

HIGH

arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure

Title source: cna

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.

References (3)

[Vendor Advisory] https://src.tuya.com/announcement/32

[Product] https://github.com/tuya/arduino-TuyaOpen

[Third Party Advisory] https://www.vulncheck.com/advisories/arduino-tuyaopen-tuyaiot-out-of-bounds-memory-read-information-disclosure

Scores

CVSS v3 7.7

EPSS 0.0001

EPSS Percentile 0.4%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-125

Status published

Products (2)

Tuya/arduino-TuyaOpen < 1.2.1

tuya/arduino-tuyaopen < 1.2.1

Published Mar 16, 2026

Tracked Since Mar 16, 2026