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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.

PUBLISHED Reserved 2026-02-27 | Published 2026-03-15 | Updated 2026-03-16 | Assigner VulnCheck




HIGH: 7.1CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

NULL Pointer Dereference

Product status

Any version before 1.2.1
affected

Credits

Maxime ROSSI BELLOM finder

References

src.tuya.com/announcement/32 (Tuya SRC Security Advisory) vendor-advisory

github.com/tuya/arduino-TuyaOpen (arduino-TuyaOpen GitHub Repository) product

www.vulncheck.com/...l-pointer-dereference-denial-of-service (VulnCheck Advisory: arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service) third-party-advisory

cve.org (CVE-2026-28522)

nvd.nist.gov (CVE-2026-28522)

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