What is CVE-2020-5567?

CVE-2020-5567 is a high-severity vulnerability in Cybozu Garoon, classified under Improper Authentication. CVSS score: 7.5/10. Published 2020-04-28.

How severe is CVE-2020-5567?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Cybozu Garoon

CVE-2020-5567

Improper authentication vulnerability in Cybozu Garoon 4.0.0 to 4.10.3 allows remote attackers to obtain data in Application Menu.

Vulnerability class: Broken Authentication

Published 2020-04-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Cybozu Garoon
Cybozu, Inc. Cybozu Garoon — versions 4.0.0 to 4.10.3

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

jvn.jp/en/jp/JVN35649781/index.html (Third Party Advisory)
kb.cybozu.support/article/36114/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-5567?: CVE-2020-5567 is a high-severity vulnerability in Cybozu Garoon, classified under Improper Authentication. CVSS score: 7.5/10. Published 2020-04-28.
How severe is CVE-2020-5567?: High severity. CVSS v3 base score is 7.5 out of 10.