Cybozu Office access restriction bypass vulnerability


Cybozu Office contains an access restriction bypass vulnerability in multiple functions.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.4 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 5.5 (Medium) [Vendor Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: Partial
Affected Products

Cybozu, Inc.
  • Cybozu Office 9.9.0 to 10.3.0


A remote unauthenticated attacker may view the information about the groupware.
An authenticated attacker may obtain privileged information or may cause specific functions to become unusable.

[Update the Software]
Update to the latest version according to the information provided by the developer.
Vendor Information

Cybozu, Inc.
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2015-8484
  2. CVE-2015-8485
  3. CVE-2015-8486
  4. CVE-2016-1152

  1. JVN : JVN#48720230
  2. National Vulnerability Database (NVD) : CVE-2015-8484
  3. National Vulnerability Database (NVD) : CVE-2015-8485
  4. National Vulnerability Database (NVD) : CVE-2015-8486
  5. National Vulnerability Database (NVD) : CVE-2016-1152
Revision History

  • [2016/02/15]
      Web page was published
      References : Contents were added