CVE-2026-28520

HIGH

arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution

Title source: cna

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.

References (3)

[Vendor Advisory] https://src.tuya.com/announcement/32

[Product] https://github.com/tuya/arduino-TuyaOpen

[Third Party Advisory] https://www.vulncheck.com/advisories/arduino-tuyaopen-wifimulti-single-byte-buffer-overflow-remote-code-execution

Scores

CVSS v3 8.4

EPSS 0.0001

EPSS Percentile 0.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-193

Status published

Products (2)

Tuya/arduino-TuyaOpen < 1.2.1

tuya/arduino-tuyaopen < 1.2.1

Published Mar 16, 2026

Tracked Since Mar 16, 2026