Security readout for executives and security teams
Cybozu Garoon 3.x and 4.x before 4.2.1 could let a logged-in remote user send spoofed email messages. This can undermine trust in internal messages and support phishing or social engineering. The public record does not provide severity scoring or detailed attack mechanics. Exposure is limited to organizations still running Cybozu Garoon 3.x or 4.x versions earlier than 4.2.1, especially where untrusted or broad user populations can authenticate. Prioritize this if legacy Garoon is still in use. The main business risk is trusted internal email being abused for impersonation. There is no sourced evidence of active exploitation, but outdated collaboration systems should be remediated promptly. Mitigation focus: Identify any Cybozu Garoon deployments and their exact versions.; Upgrade affected Garoon 3.x or 4.x systems to 4.2.1 or later per vendor guidance.; Review Cybozu advisory pages for the applicable update package and support status..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2016-1188 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://support.cybozu.com/ja-jp/article/8845CVE reference · x_refsource_CONFIRM
- https://garoon.cybozu.co.jp/support/update/package/421sp1.html#03CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.