CVE-2026-28520CWE-193

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

High · published March 15, 2026

CVSS v4.0
8.6
EPSS
0%
Percentile
13.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00232 · 13.2th percentile
Weakness
CWE-193 · Off-by-one Error
Published
2026-03-15T13:35Z
EPSS history
Timeline
  • 15 MAR 13:35Z
    arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution
    cvelistv5