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CVE-2026-21411

Quick assessment

Affected
Plat'Home Co.,Ltd. OpenBlocks IoT DX1 (FW5.0.x)
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Plat’home Plat’Home OpenBlocks IoT VX2是日本Plat’home公司的一款物联网网关设备。 Plat’Home OpenBlocks IoT VX2存在安全漏洞，该漏洞源于身份验证绕过，可能导致攻击者绕过管理员身份验证并更改密码。

AI Predicted 9.8 Difficulty: Easy EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-21411

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Plat’Home OpenBlocks IoT VX2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Plat’home Plat’Home OpenBlocks IoT VX2是日本Plat’home公司的一款物联网网关设备。 Plat’Home OpenBlocks IoT VX2存在安全漏洞，该漏洞源于身份验证绕过，可能导致攻击者绕过管理员身份验证并更改密码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
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 -

II. Public POCs for CVE-2026-21411

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
default-local-qwen3.6 · 11703 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-21411

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Vendor Advisories for CVE-2026-21411 (1)

Other References for CVE-2026-21411 (1)

IV. Related Vulnerabilities

Same vendor: Plat'Home Co.,Ltd.
Same weakness: CWE-288

V. Comments for CVE-2026-21411

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