CVE-2026-28522

MEDIUM

arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service

Title source: cna

Description

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 to cause memory exhaustion on the device, triggering a null pointer dereference and resulting in 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-wifiudp-null-pointer-dereference-denial-of-service

Scores

CVSS v3 6.5

EPSS 0.0001

EPSS Percentile 0.5%

Attack Vector ADJACENT_NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

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