Buffer overflow in Tuya Arduino-Tuyaopen
CVE-2026-28519
arduino-TuyaOpen before version 1.2.1 contains a heap-based buffer overflow vulnerability 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.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (32.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Tuya Arduino-tuyaopen — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28519?
- CVE-2026-28519 is a high-severity vulnerability in Tuya Arduino-Tuyaopen, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-16.
- How severe is CVE-2026-28519?
- High severity. CVSS v3 base score is 8.8 out of 10.