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CVE-2015-5647

21
FAUCET Score

CVE-2015-5647 is a critical remote code execution vulnerability affecting the RSS Reader component in Cybozu Garoon versions 3.x through 3.7.5 and 4.x through 4.0.3. An authenticated attacker can exploit this flaw to execute arbitrary PHP code on the server. With a CVSS score of 8.5, this vulnerability is highly severe due to its network-based attack vector, medium complexity, and complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the potential impact remains significant for affected organizations.

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: 2.0

8.5HIGH

AV:N/AC:M/Au:S/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 70th percentile among its peer group of 1,162 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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-2015-000151
Vendor Advisory
jvn.jp / en/jp/JVN21025396/374951/index.html
Vendor Advisory
jvn.jp / en/jp/JVN21025396/index.html
Vendor Advisory
support.cybozu.com / ja-jp/article/8810
Vendor Advisory