PT-2026-25551 · Tuya+1 · Arduino-Tuyaopen

Maxime Rossi Bellom · Published 2026-03-15 · Updated 2026-03-16 · CVE-2026-28520

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions arduino-TuyaOpen versions prior to 1.2.1

Description arduino-TuyaOpen before version 1.2.1 contains a single-byte buffer overflow in the WiFiMulti component. When a device connects to an attacker-controlled access point (AP), an attacker can exploit this overflow to execute arbitrary code on the affected embedded device.

Recommendations Update arduino-TuyaOpen to version 1.2.1 or later.

Fix

RCE

Weakness Enumeration

CWE-193

Related Identifiers

CVE-2026-28520

Affected Products

Arduino-Tuyaopen

References · 7

• https://src.tuya.com/announcement/32 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-28520 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28520 · Security Note
• https://github.com/tuya/arduino-TuyaOpen · Note
• https://vulncheck.com/advisories/arduino-tuyaopen-wifimulti-single-byte-buffer-overflow-remote-code-execution · Note
• https://twitter.com/CVEnew/status/2033194267334865248 · Twitter Post
• https://t.me/CVEtracker/47434 · Telegram Post