Authentication bypass in Plat'Home Co.,Ltd. OpenBlocks IoT DX1
Priority MEDIUM 40CWE-288Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-288.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0037 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Plat'Home Co.,Ltd. | OpenBlocks IoT DX1 (FW5.0.x) | all versions prior to FW5.0.8 | — | No fix listed | CNA |
| Plat'Home Co.,Ltd. | OpenBlocks IoT EX/BX models (FW5.0.x) | all versions prior to FW5.0.8 | — | No fix listed | CNA |
| Plat'Home Co.,Ltd. | OpenBlocks IX9 models with FW (FW5.0.x) | all versions prior to FW5.0.8 | — | No fix listed | CNA |
| Plat'Home Co.,Ltd. | OpenBlocks IoT VX2 (FW5.0.x) | all versions prior to FW5.0.8 | — | No fix listed | CNA |
| Plat'Home Co.,Ltd. | OpenBlocks IDM RX1 (FW5.0.x) | all versions prior to FW5.0.8 | — | No fix listed | CNA |
| Plat'Home Co.,Ltd. | OpenBlocks IoT FX1 (FW5.0.x) | all versions prior to FW5.0.8 | — | No fix listed | CNA |
- OpenBlocks IoT DX1 (FW5.0.x) VendorPlat'Home Co.,Ltd. Affected all versions prior to FW5.0.8 Fixed in — No fix listed CNA
- OpenBlocks IoT EX/BX models (FW5.0.x) VendorPlat'Home Co.,Ltd. Affected all versions prior to FW5.0.8 Fixed in — No fix listed CNA
- OpenBlocks IX9 models with FW (FW5.0.x) VendorPlat'Home Co.,Ltd. Affected all versions prior to FW5.0.8 Fixed in — No fix listed CNA
- OpenBlocks IoT VX2 (FW5.0.x) VendorPlat'Home Co.,Ltd. Affected all versions prior to FW5.0.8 Fixed in — No fix listed CNA
- OpenBlocks IDM RX1 (FW5.0.x) VendorPlat'Home Co.,Ltd. Affected all versions prior to FW5.0.8 Fixed in — No fix listed CNA
- OpenBlocks IoT FX1 (FW5.0.x) VendorPlat'Home Co.,Ltd. Affected all versions prior to FW5.0.8 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-21411
- 2026-10-03 Alias added: GHSA-xm4x-3r5h-vwfr
References
More Plat'Home Co.,Ltd. vulnerabilities
- TI-2020-04519 Cross-site request forgery in Plat'Home Co.,Ltd. EasyBlocks IPv6 CVSS 3.1HIGH 8.8
- TI-2020-04505 OS command injection in Plat'Home Co.,Ltd. OpenBlocks IoT VX2 CVSS 3.1HIGH 8.8
- TI-2020-04520 Session fixation in Plat'Home Co.,Ltd. EasyBlocks IPv6 CVSS 3.1HIGH 8.1
- TI-2020-04506 Improper authentication in Plat'Home Co.,Ltd. OpenBlocks IoT VX2 CVSS 3.1HIGH 8.8
Sources
- CVE-2026-21411 · CVE Program
- CVE-2026-21411 · NVD
- FIRST EPSS
- GHSA-xm4x-3r5h-vwfr · GitHub Advisory Database · CC BY 4.0
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