Vulnerability · Published Mar 15, 2026 · Assigned by VulnCheck
CVE-2026-28520arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
High 8.4
In plain English
A high-severity security flaw in arduino-TuyaOpen from Tuya. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)8.4High
Exploit odds (30 days)0.2%top 90.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Tuya | arduino-TuyaOpen | 0 – before 1.2.1 |
Weakness: CWE-193 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- Tuya SRC Security Advisory vendor-advisory
- arduino-TuyaOpen GitHub Repository product
- VulnCheck Advisory: arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution third-party-advisory