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CVE-2026-28520

8.4 · HIGH

arduino-TuyaOpen before version 1.2.1 contains a single-byte buffer overflow vulnerability in the WiFiMulti component.

Published Mar 16, 2026tuyaCWE-193EPSS 0.20%

Overview

CVE-2026-28520 is a high-severity vulnerability affecting tuya arduino-tuyaopen. It was published on March 16, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from tuya. Update arduino-tuyaopen to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
tuyaarduino-tuyaopen>= 0, < 1.2.1Affected

References

GitHubgithub.com/tuya/arduino-TuyaOpenRefsrc.tuya.com/announcement/32Refwww.vulncheck.com/advisories/arduino-tuyaopen-wifimulti-single-byte-buffer-overflow-remote-code-execution

How CyberStrike helps

Frequently asked questions

What is CVE-2026-28520?

CVE-2026-28520 is a high-severity vulnerability affecting tuya arduino-tuyaopen. It was published on March 16, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-28520?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-28520?

Check the references section for vendor advisories and patches from tuya. Update arduino-tuyaopen to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-28520?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-28520 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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