OfficeApplication · Cybozu

CVE-2015-8485

MEDIUM · 5.4 CVSS v3.0 Published 2016-02-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
60/100
Remediation priority · Elevated
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Cybozu Office 9.9.0 through 10.3.0 allows remote authenticated users to bypass intended access restrictions and read arbitrary posting titles via unspecified vectors, a different vulnerability than CVE-2015-8484, CVE-2015-8486, and CVE-2016-1152.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Cybozu Office 9.9.0 through 10.3.0 contains an access control bypass vulnerability where remote authenticated users can read arbitrary posting titles beyond their intended permissions. This is an information disclosure issue stemming from insufficient validation of user permissions when accessing posting content.

MitigationApply vendor patches or upgrade to a patched version of Cybozu Office beyond 10.3.0. Verify that access control checks are properly enforced for all posting title resources regardless of user authentication state.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
OfficeApplication
Affected:= 9.9.0= 10.0.0= 10.0.1= 10.0.2= 10.1.0= 10.1.2= 10.2.0= 10.3.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Cybozu Office installation
    Check for Cybozu Office processes or web services running on the server, typically on ports 80/443 or configured web server ports
    Affected if Cybozu Office is installed and running
  2. Determine installed Cybozu Office version
    Access the Cybozu Office administrator interface or check version information files in the installation directory (typically found in system settings or about page)
    Affected if The version cannot be determined or is in the 9.9.0 through 10.3.0 range
  3. Compare version to affected range
    Compare your installed version against the affected list: 9.9.0, 10.0.0, 10.0.1, 10.0.2, 10.1.0, 10.1.2, 10.2.0, 10.3.0
    Affected if Your installed version matches any of these versions exactly
  4. Verify user authentication is enabled
    Check if Cybozu Office user authentication is active and users can log in to the system
    Affected if User authentication is enabled and users have access to posting features

You are affected if Cybozu Office is running with a version matching 9.9.0 through 10.3.0 and user authentication is enabled, allowing authenticated users to potentially access posting titles beyond their permissions.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor patches or upgrade to a patched version of Cybozu Office beyond 10.3.0. Verify that access control checks are properly enforced for all posting title resources regardless of user authentication state.

Fix this in Office Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA3.0 h
19.0 hours of engineering $3,380
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2015-8485 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2015-8485 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data