CVE-2026-28521— arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure
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I. Basic Information for CVE-2026-28521
Vulnerability Information
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Vulnerability Title
arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure
Source: NVD (National Vulnerability Database)
Vulnerability Description
arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the TuyaIoT component. An attacker who hijacks or controls the Tuya cloud service can issue malicious DP event data to victim devices, causing out-of-bounds memory access that may result in information disclosure or a denial-of-service condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
arduino-TuyaOpen 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于TuyaIoT组件存在越界内存读取，可能导致信息泄露或拒绝服务。
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-2026-28521
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Tuya SRCvendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-28521
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-2026-28522 | 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-2026-28520
arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remot - CVE-2026-3465
Tuya App/SDK JSON Data Point denial of service - CVE-2024-3764
Tuya SDK MQTT Packet denial of service
Same weakness: CWE-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-28521
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