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

Quick assessment

Affected
Tuya arduino-TuyaOpen
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

arduino-TuyaOpen是Tuya开源的一个基于Arduino的物联网开发框架。 arduino-TuyaOpen 1.2.1之前版本存在代码问题漏洞，该漏洞源于WiFiUDP组件存在空指针取消引用，可能导致拒绝服务。

CVSS 6.5 · Medium EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tuya arduino-TuyaOpen < 1.2.1 affected
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I. Basic Information for CVE-2026-28522

Vulnerability Information
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Vulnerability Title
arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
arduino-TuyaOpen 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
arduino-TuyaOpen是Tuya开源的一个基于Arduino的物联网开发框架。 arduino-TuyaOpen 1.2.1之前版本存在代码问题漏洞，该漏洞源于WiFiUDP组件存在空指针取消引用，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tuya arduino-TuyaOpen 0 ~ 1.2.1 -

II. Public POCs for CVE-2026-28522

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III. Intelligence Information for CVE-2026-28522

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Vendor Advisories for CVE-2026-28522 (2)

Vendor Pages for CVE-2026-28522 (1)

Same Patch Batch · Tuya · 2026-03-15 · 4 CVEs total

CVE-2026-28519 8.8 HIGH arduino-TuyaOpen DnsServer Heap-Based Buffer Overflow Remote Code Execution
CVE-2026-28520 8.4 HIGH arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
CVE-2026-28521 7.7 HIGH arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure

IV. Related Vulnerabilities

Same product: arduino-TuyaOpen
Same vendor: Tuya
Same weakness: CWE-476

V. Comments for CVE-2026-28522

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