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CVE-2015-8489

18
FAUCET Score

CVE-2015-8489 describes a denial-of-service vulnerability in Cybozu Office versions 9.9.0 through 10.3.0. An authenticated attacker can exploit this by uploading a specially crafted CSV file to the customapp feature, leading to excessive database locking. This vulnerability has a CVSS v3 score of 6.5 (Medium), indicating a network-based attack with low complexity that results in high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
9.9.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:9.9.0:*:*:*:*:*:*:*
10.0.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:10.0.0:*:*:*:*:*:*:*
10.0.1CPE matchmatch criteria
cpe:2.3:a:cybozu:office:10.0.1:*:*:*:*:*:*:*
10.0.2CPE matchmatch criteria
cpe:2.3:a:cybozu:office:10.0.2:*:*:*:*:*:*:*
10.1.0CPE matchmatch criteria
cpe:2.3:a:cybozu:office:10.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.61%
Probability of exploitation in next 30 days
EPSS Percentile
73.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0161 is in the 87th percentile among its peer group of 21,974 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 0.0 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 / jvndb/JVNDB-2016-000020
Vendor Advisory
jvn.jp / en/jp/JVN20246313/index.html
Vendor Advisory
cs.cybozu.co.jp / 2015/006073.html
Vendor Advisory