Security readout for executives and security teams
Plain-English summary
Cybozu Garoon Workflow has a privilege-control flaw. An authenticated remote user may be able to delete Workflow route information without having the proper permission. That could disrupt approval processes or alter operational records, but the provided sources do not include CVSS scoring or confirmed exploitation.
Executive priority
Prioritize assessment for teams relying on Garoon Workflow for approvals or business process control. The urgency is moderate because exploitation requires authentication, but unauthorized deletion of route data can disrupt operations. Patch status must be confirmed from vendor guidance.
Technical view
CVE-2021-20773 affects Cybozu Garoon versions 4.0.0 through 5.5.0. The issue is in Workflow and permits a remote authenticated attacker to delete Workflow route information without appropriate privilege. No CWE, CVSS vector, exploit details, or patch version is included in the supplied bundle.
Likely exposure
Exposure is limited to organizations running Cybozu Garoon 4.0.0 to 5.5.0 with Workflow enabled and accounts able to authenticate. Internet reachability is not stated in the sources, so validate both internal and external access paths.
Exploitation context
The bundle does not show CISA KEV listing or any cited active exploitation. The attacker must be authenticated remotely. Impact appears focused on unauthorized deletion of Workflow route information, which may affect business approvals and workflow integrity.
Researcher notes
Evidence is sparse. The supplied record identifies affected versions and the privilege bypass outcome, but omits root cause, CVSS, CWE, proof of concept, and fixed release details. Avoid assuming exploitability beyond authenticated unauthorized deletion of Workflow route information.
Mitigation direction
- Identify all Cybozu Garoon instances and versions.
- Check Cybozu and JVN advisories for fixed versions or workarounds.
- Apply vendor-recommended updates or mitigations after change review.
- Restrict Garoon Workflow access to users with current business need.
- Review workflow administration permissions and remove unnecessary accounts.
Validation and detection
- Confirm whether any instance runs Garoon 4.0.0 through 5.5.0.
- Verify Workflow is enabled on affected Garoon instances.
- Review audit logs for unexpected Workflow route deletions.
- Check for authenticated access from untrusted networks.
- Document vendor advisory status and remediation decisions.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2021-20773 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
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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://cs.cybozu.co.jp/2021/007206.htmlCVE reference · x_refsource_MISC
- https://jvn.jp/en/jp/JVN54794245/index.htmlCVE reference · x_refsource_MISC
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.