CVE-2026-28520

HIGH

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

Title source: cna
STIX 2.1

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)

Core 3
Core References
Vendor Advisory vendor-advisory
Tuya SRC Security Advisory
https://src.tuya.com/announcement/32
Product product
arduino-TuyaOpen GitHub Repository
https://github.com/tuya/arduino-TuyaOpen
Third Party Advisory third-party-advisory
VulnCheck Advisory: arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
https://www.vulncheck.com/advisories/arduino-tuyaopen-wifimulti-single-byte-buffer-overflow-remote-code-execution

Scores

CVSS v3 8.4
EPSS 0.0019
EPSS Percentile 9.1%
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