CVE-2026-21411
High
Description
Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may allow an attacker to bypass administrator authentication and change the password.
SeverityHigh
CVSS8.7
Exploit probability—
ProductOpenBlocks IoT DX1 (FW5.0.x)
PublishedJan 6, 2026
First seenJan 6, 2026
Weakness typeCWE-288CWE-288
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Plat'Home Co.,Ltd. OpenBlocks IoT DX1 (FW5.0.x) | all versions prior to FW5.0.8 | — |
| Plat'Home Co.,Ltd. OpenBlocks IoT EX/BX models (FW5.0.x) | all versions prior to FW5.0.8 | — |
| Plat'Home Co.,Ltd. OpenBlocks IX9 models with FW (FW5.0.x) | all versions prior to FW5.0.8 | — |
| Plat'Home Co.,Ltd. OpenBlocks IoT VX2 (FW5.0.x) | all versions prior to FW5.0.8 | — |
| Plat'Home Co.,Ltd. OpenBlocks IDM RX1 (FW5.0.x) | all versions prior to FW5.0.8 | — |
| Plat'Home Co.,Ltd. OpenBlocks IoT FX1 (FW5.0.x) | all versions prior to FW5.0.8 | — |
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