PT-2026-25550 · Tuya+1 · Arduino-Tuyaopen

Maxime Rossi Bellom · Published 2026-03-15 · Updated 2026-03-16 · CVE-2026-28519

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/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 heap-based buffer overflow in the DnsServer component. An attacker on the same local area network who controls the LAN DNS server can send malicious DNS responses to overflow the heap buffer, potentially allowing execution of arbitrary code on affected embedded devices.

Recommendations Update arduino-TuyaOpen to version 1.2.1 or later.

Fix

RCE

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-28519

Affected Products

Arduino-Tuyaopen

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-28519 · Security Note
• https://osv.dev/vulnerability/CVE-2026-28519 · Vendor Advisory
• https://src.tuya.com/announcement/32 · Vendor Advisory
• https://github.com/tuya/arduino-TuyaOpen · Note
• https://vulncheck.com/advisories/arduino-tuyaopen-dnsserver-heap-based-buffer-overflow-remote-code-execution · Note
• https://twitter.com/CVEnew/status/2033194265359397186 · Twitter Post
• https://twitter.com/CveFindCom/status/2033555291598463096 · Twitter Post
• https://t.me/CVEtracker/47436 · Telegram Post