What is CVE-2018-0550?

CVE-2018-0550 is a medium-severity vulnerability in Cybozu Garoon. CVSS score: 4.3/10. Published 2018-04-16.

How severe is CVE-2018-0550?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Cybozu Garoon

CVE-2018-0550

Cybozu Garoon 3.5.0 to 4.6.1 allows remote authenticated attackers to bypass access restriction to view the closed title of "Cabinet" via unspecified vectors.

Published 2018-04-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: -0.000

Affected products

Cybozu Garoon
Cybozu, Inc. Cybozu Garoon — versions 3.5.0 to 4.6.1

References

support.cybozu.com/ja-jp/article/10056 (Vendor Advisory)
jvn.jp/en/jp/JVN65268217/index.html (VDB Entry, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2018-0550?: CVE-2018-0550 is a medium-severity vulnerability in Cybozu Garoon. CVSS score: 4.3/10. Published 2018-04-16.
How severe is CVE-2018-0550?: Medium severity. CVSS v3 base score is 4.3 out of 10.