Vulnerability in Shizen Connect Inc. Shizenbox2 (Dev-Conf)

CVE-2026-80253

An improper physical access control issue exists in ShizenBox2 (dev-conf). If exploited, an attacker with physical access to the product may execute bootloader commands without authentication.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (24.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-80253: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-80253?
CVE-2026-80253 is a medium-severity vulnerability in Shizen Connect Inc. Shizenbox2 (Dev-Conf), classified under CWE-1263. CVSS score: 6.8/10. Published 2026-09-03.
How severe is CVE-2026-80253?
Medium severity. CVSS v3 base score is 6.8 out of 10.