What is CVE-2016-4871?

CVE-2016-4871 is a medium-severity vulnerability in Cybozu Office, classified under CWE-399. CVSS score: 6.5/10. Published 2017-04-17.

How severe is CVE-2016-4871?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Cybozu Office

CVE-2016-4871

Cybozu Office 9.0.0 through 10.4.0 allows remote attackers to cause a denial of service.

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.023 (82.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Cybozu Office — versions 9.0, 9.1.0, 9.2.0

Weakness classification (CWE)

CWE-399

References

www.securityfocus.com/bid/97716 (VDB Entry, Third Party Advisory, vdb-entry)
support.cybozu.com/ja-jp/article/9426 (Vendor Advisory)
jvn.jp/en/jp/JVN10092452/index.html (VDB Entry, Third Party Advisory, third-party-advisory)
jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000192.html (VDB Entry, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2016-4871?: CVE-2016-4871 is a medium-severity vulnerability in Cybozu Office, classified under CWE-399. CVSS score: 6.5/10. Published 2017-04-17.
How severe is CVE-2016-4871?: Medium severity. CVSS v3 base score is 6.5 out of 10.