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CVE-2026-21411

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CVE-2026-21411

Published: Jan 6, 2026

Modified: Jan 6, 2026

PUBLISHED

CVSS v3.0

8.8

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.

VendorProductVersions

Plat'Home Co.,Ltd.

OpenBlocks IoT DX1 (FW5.0.x)

affected
all versions prior to FW5.0.8

Plat'Home Co.,Ltd.

OpenBlocks IoT EX/BX models (FW5.0.x)

affected
all versions prior to FW5.0.8

Plat'Home Co.,Ltd.

OpenBlocks IX9 models with FW (FW5.0.x)

affected
all versions prior to FW5.0.8

Plat'Home Co.,Ltd.

OpenBlocks IoT VX2 (FW5.0.x)

affected
all versions prior to FW5.0.8

Plat'Home Co.,Ltd.

OpenBlocks IDM RX1 (FW5.0.x)

affected
all versions prior to FW5.0.8

Plat'Home Co.,Ltd.

OpenBlocks IoT FX1 (FW5.0.x)

affected
all versions prior to FW5.0.8

Weaknesses (CWE)

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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