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CVE-2026-28521

7.7 · HIGH

arduino-TuyaOpen before version 1.2.1 contains an out-of-bounds memory read vulnerability in the TuyaIoT component.

Published Mar 16, 2026tuyaCWE-125EPSS 0.22%

Overview

CVE-2026-28521 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 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, 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 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.

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-tuyaiot-out-of-bounds-memory-read-information-disclosure

How CyberStrike helps

Frequently asked questions

What is CVE-2026-28521?

CVE-2026-28521 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 7.7 (HIGH).

How severe is CVE-2026-28521?

This vulnerability has a CVSS 3.1 base score of 7.7, 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-2026-28521?

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-2026-28521?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-28521 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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