What is CVE-2015-5666?

CVE-2015-5666 is a medium-severity vulnerability in Ana All Nippon Airways, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2017-09-25.

How severe is CVE-2015-5666?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Ana All Nippon Airways

CVE-2015-5666

ANA App for Android 3.1.1 and earlier, and ANA App for iOS 3.3.6 and earlier does not verify SSL certificates.

Vulnerability class: Improper Certificate Validation

Published 2017-09-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Ana All Nippon Airways

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

jvn.jp/en/jp/JVN25086409/index.html (VDB Entry, Third Party Advisory, third-party-advisory)
www.securityfocus.com/bid/77344 (VDB Entry, Third Party Advisory, vdb-entry)
jvndb.jvn.jp/en/contents/2015/JVNDB-2015-000164.html (VDB Entry, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2015-5666?: CVE-2015-5666 is a medium-severity vulnerability in Ana All Nippon Airways, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2017-09-25.
How severe is CVE-2015-5666?: Medium severity. CVSS v3 base score is 5.9 out of 10.