CVE-2026-21411

8.7 highEPSS 0.4%

High (8.7). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

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

CVSS 3.0

8.8 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-31)
CWE: CWE-288
Published: 2026-01-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

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

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