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CVE-2016-7816

21
FAUCET Score

CVE-2016-7816 describes a vulnerability in Cybozu kintone mobile for Android versions 1.0.6 and earlier, where the application fails to properly validate X.509 certificates from SSL servers. This flaw allows man-in-the-middle attackers to spoof legitimate servers using crafted certificates, potentially leading to the interception of sensitive information. Rated with a CVSS score of 5.9 (Medium), the vulnerability has a network attack vector and high confidentiality impact, but requires high attack complexity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.6CPE matchmatch criteria
cpe:2.3:a:cybozu:kintone:*:*:*:*:*:android:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 10th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN20252219/index.html
Vendor Advisory
support.cybozu.com / ja-jp/article/9719
Vendor Advisory
securityfocus.com / bid/94547
Third Party AdvisoryVDB Entry