What’s Vulnerable › Vulnerabilities

CVE-2026-28522: arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-16 · updated 2026-06-17
• Weakness: CWE-476

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 that trigger a null pointer dereference, resulting in a denial-of-service condition.

Affected products

• Tuya arduino-TuyaOpen: before 1.2.1 — fixed in 1.2.1

How to fix

Upgrade to a fixed version: Tuya arduino-TuyaOpen 1.2.1. Check the vendor advisory for mitigations.

References

• https://github.com/tuya/arduino-TuyaOpen
• https://src.tuya.com/announcement/32
• https://www.vulncheck.com/advisories/arduino-tuyaopen-wifiudp-null-pointer-dereference-denial-of-service

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