CVE-2026-21411

HIGH EPSS 19.7%

Published Jan 6, 20265mo ago · Modified Jun 17, 20261w ago

8.7 CVSS 4.0

High

Published Jan 6, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

8.7

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Adjacent

Attack Complexity Low

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

19.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-288

References 2

jvn.jp https://jvn.jp/en/vu/JVNVU97172240/
plathome.co.jp https://www.plathome.co.jp/support/software/fw5/dx1-v5-0-8/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.