What is CVE-2016-1219?

CVE-2016-1219 is a critical-severity vulnerability in Cybozu Garoon, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-04-20.

How severe is CVE-2016-1219?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Cybozu Garoon

CVE-2016-1219

Cybozu Garoon before 4.2.2 allows remote attackers to bypass login authentication via vectors related to API use.

Vulnerability class: Broken Authentication

Published 2017-04-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.033 (88.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000

Affected products

Cybozu Garoon

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

jvn.jp/en/jp/JVN89211736/index.html (VDB Entry, Third Party Advisory, third-party-advisory)
jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000148.html (VDB Entry, Third Party Advisory, third-party-advisory)
www.securityfocus.com/bid/92598 (VDB Entry, Third Party Advisory, vdb-entry)
support.cybozu.com/ja-jp/article/9408 (Vendor Advisory)

Frequently asked questions

What is CVE-2016-1219?: CVE-2016-1219 is a critical-severity vulnerability in Cybozu Garoon, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-04-20.
How severe is CVE-2016-1219?: Critical severity. CVSS v3 base score is 9.8 out of 10.