CVE-2026-28521 arduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information Disclosure
Attacker controlling Tuya cloud can send malicious data to devices, causing out-of-bounds reads that leak information or crash the device.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-28521?
CVE-2026-28521 is a high-severity vulnerability in arduino-TuyaOpen, published on 15 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2026-28521?
It affects 1 product.
Products include Tuya Arduino-Tuyaopen.
How do I fix CVE-2026-28521?
No fix has been published for CVE-2026-28521 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-28521 being exploited?
There is no known exploitation of CVE-2026-28521 in the wild and no public exploit code.
Other vulnerabilities in arduino-TuyaOpen
Sources
Also known as GHSA-r4wm-392x-hfg5.