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CVE-2026-28521

HIGH CVSS 4.0: 7.0 EPSS 0.01%
Updated Mar 17, 2026
Tuya
Parameter Value
CVSS 7.0 (HIGH)
Affected Versions before 1.2.1
Fixed In 1.2.1
Type CWE-125 (Out-of-bounds Read)
Vendor Tuya
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Tuya Arduino-Tuyaopen
cpe:2.3:a:tuya:arduino-tuyaopen:*:*:*:*:*:*:*:*
1.2.1