Vulnerability in Tuya Arduino-Tuyaopen
CVE-2026-28520
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.
EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/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-2026-28520?
- CVE-2026-28520 is a high-severity vulnerability in Tuya Arduino-Tuyaopen, classified under Off-by-one Error. CVSS score: 8.4/10. Published 2026-03-16.
- How severe is CVE-2026-28520?
- High severity. CVSS v3 base score is 8.4 out of 10.