CVE-2026-28520— arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
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I. Basic Information for CVE-2026-28520
Vulnerability Information
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Vulnerability Title
arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
Source: NVD (National Vulnerability Database)
Vulnerability Description
arduino-TuyaOpen before version 1.2.1 contains a single-byte buffer overflow vulnerability in the WiFiMulti component. When the victim's smart hardware connects to an attacker-controlled AP hotspot, the attacker can exploit the overflow to execute arbitrary code on the affected embedded device.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
Off-by-one错误
Source: NVD (National Vulnerability Database)
Vulnerability Title
arduino-TuyaOpen 安全漏洞
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之前版本存在安全漏洞，该漏洞源于WiFiMulti组件存在单字节缓冲区溢出，可能导致执行任意代码。
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-2026-28520
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Tuya SRCvendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-28520
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-2026-28521 | 7.7 HIGH | arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure |
| CVE-2026-28522 | 6.5 MEDIUM | arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service |
IV. Related Vulnerabilities
Same vendor: Tuya
- CVE-2026-28522
arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of - CVE-2026-28519
arduino-TuyaOpen DnsServer Heap-Based Buffer Overflow Remote - CVE-2026-28521
arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Informati - CVE-2026-3465
Tuya App/SDK JSON Data Point denial of service - CVE-2024-3764
Tuya SDK MQTT Packet denial of service
V. Comments for CVE-2026-28520
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