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CVE-2015-7776

14
FAUCET Score

CVE-2015-7776 is a medium-severity vulnerability affecting Cybozu Garoon 3.x and 4.x prior to version 4.2.0. It allows remote attackers to track users through crafted HTML email messages due to improper restrictions on loading IMG elements. The vulnerability has a CVSSv3 score of 4.3, indicating a network-based attack requiring user interaction, with a low impact on confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0CPE matchmatch criteria
cpe:2.3:a:cybozu:garoon:3.0.0:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:cybozu:garoon:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:cybozu:garoon:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:cybozu:garoon:3.0.3:*:*:*:*:*:*:*
3.1.0CPE matchmatch criteria
cpe:2.3:a:cybozu:garoon:3.1.0:*:*:*:*:*:*:*

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:L/I:N/A:N

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

Exploit Intelligence

EPSS Score
1.30%
Probability of exploitation in next 30 days
EPSS Percentile
67.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0130 is in the 80th percentile among its peer group of 26,221 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 / jvndb/JVNDB-2016-000085
Vendor Advisory
jvn.jp / en/jp/JVN53542912/index.html
Vendor Advisory
support.cybozu.com / ja-jp/article/8757
PatchVendor Advisory
support.cybozu.com / ja-jp/article/8897
PatchVendor Advisory
support.cybozu.com / ja-jp/article/8951
PatchVendor Advisory
support.cybozu.com / ja-jp/article/8982
PatchVendor Advisory