Out-of-bounds Read in Tuya Arduino-Tuyaopen
CVE-2026-28521
arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the TuyaIoT component. An attacker who hijacks or controls the Tuya cloud service can issue malicious DP event data to victim devices, causing out-of-bounds memory access that may result in information disclosure or a denial-of-service condition.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (11.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-2026-28521?
- CVE-2026-28521 is a high-severity vulnerability in Tuya Arduino-Tuyaopen, classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2026-03-16.
- How severe is CVE-2026-28521?
- High severity. CVSS v3 base score is 7.7 out of 10.