CVE-2026-28520

HIGH 8.4

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

CVSS Score

8.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-193
Vendor	tuya
Product	arduino-tuyaopen
Published	Mar 15, 2026
Last Updated	Mar 16, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Tuya / arduino-TuyaOpen

0 < 1.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

src.tuya.com: https://src.tuya.com/announcement/32 github.com: https://github.com/tuya/arduino-TuyaOpen vulncheck.com: https://www.vulncheck.com/advisories/arduino-tuyaopen-wifimulti-single-byte-buffer-overflow-remote-code-execution

Credits

Maxime ROSSI BELLOM