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CVE-2016-4841

19
FAUCET Score

CVE-2016-4841 describes a vulnerability in Cybozu Mailwise versions prior to 5.4.0, allowing remote attackers to inject arbitrary email headers. This medium-severity vulnerability (CVSS 4.3) requires user interaction and network access, potentially leading to information disclosure through manipulated email headers. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.0.0CPE matchmatch criteria
cpe:2.3:a:cybozu:mailwise:5.0.0:*:*:*:*:*:*:*
5.0.1CPE matchmatch criteria
cpe:2.3:a:cybozu:mailwise:5.0.1:*:*:*:*:*:*:*
5.0.4CPE matchmatch criteria
cpe:2.3:a:cybozu:mailwise:5.0.4:*:*:*:*:*:*:*
5.0.5CPE matchmatch criteria
cpe:2.3:a:cybozu:mailwise:5.0.5:*:*:*:*:*:*:*
5.0.6CPE matchmatch criteria
cpe:2.3:a:cybozu:mailwise:5.0.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 84th percentile among its peer group of 26,209 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvndb.jvn.jp / en/contents/2016/JVNDB-2016-000135.html
Third Party AdvisoryVDB Entry
jvn.jp / en/jp/JVN01353821/index.html
Third Party AdvisoryVDB Entry
support.cybozu.com / ja-jp/article/9607
Vendor Advisory
securityfocus.com / bid/92459
Third Party AdvisoryVDB Entry