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CVE-2026-28520

HIGH CVSS 4.0: 8.6 EPSS 0.01%
Updated Mar 17, 2026
Tuya
Parameter Value
CVSS 8.6 (HIGH)
Affected Versions before 1.2.1
Fixed In 1.2.1
Type CWE-193
Vendor Tuya
Public PoC No

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.

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
High
Complete 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