What is CVE-2016-1187?

CVE-2016-1187 is a medium-severity vulnerability in Cybozu Kunai, classified under Information Disclosure. CVSS score: 6.8/10. Published 2017-04-21.

How severe is CVE-2016-1187?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Information disclosure in Cybozu Kunai

CVE-2016-1187

Cybozu KUNAI for iPhone 2.0.3 through 3.1.5 and for Android 2.1.2 through 3.0.4 does not verify SSL certificates.

Vulnerability class: Information Disclosure

Published 2017-04-21 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.012 (66.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Cybozu Kunai — versions 2.1.2, 2.1.3, 3.0.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

support.cybozu.com/ja-jp/article/9446 (Vendor Advisory)
jvn.jp/en/jp/JVN11994518/index.html (VDB Entry, Third Party Advisory, third-party-advisory)
support.cybozu.com/ja-jp/article/9495 (Vendor Advisory)
jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000060.html (VDB Entry, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2016-1187?: CVE-2016-1187 is a medium-severity vulnerability in Cybozu Kunai, classified under Information Disclosure. CVSS score: 6.8/10. Published 2017-04-21.
How severe is CVE-2016-1187?: Medium severity. CVSS v3 base score is 6.8 out of 10.