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CVE-2016-4870

21
FAUCET Score

CVE-2016-4870 describes a cross-site scripting (XSS) vulnerability affecting Cybozu Office versions 9.0.0 through 10.4.0, allowing authenticated attackers to inject malicious web scripts via the Schedule function. This medium-severity vulnerability has a CVSS score of 5.4, indicating that an attacker with low privileges can exploit it over the network with user interaction, potentially leading to limited impact on confidentiality and integrity. There is currently 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
9.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:9.0:*:*:*:*:*:*:*
9.1.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:9.1.0:*:*:*:*:*:*:*
9.2.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:9.2.0:*:*:*:*:*:*:*
9.2.1CPE matchmatch criteria
cpe:2.3:a:cybozu:office:9.2.1:*:*:*:*:*:*:*
9.3.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:9.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.96%
Probability of exploitation in next 30 days
EPSS Percentile
58.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0096 is in the 92nd percentile among its peer group of 15,224 CVEs.

Social Chatter

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

jvndb.jvn.jp / en/contents/2016/JVNDB-2016-000186.html
Third Party AdvisoryVDB Entry
jvn.jp / en/jp/JVN06726266/index.html
Third Party AdvisoryVDB Entry
support.cybozu.com / ja-jp/article/9427
Vendor Advisory
securityfocus.com / bid/93281
Third Party AdvisoryVDB Entry