CVE-2026-28521 HIGH

CVE-2026-28521: arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure

Vendor Tuya
Product arduino-TuyaOpen
Weakness CWE-125
Published March 15, 2026
Last update March 16, 2026

CVSS base score

7.0/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 15, 2026 CVE published
March 16, 2026 Record updated