Security readout for executives and security teams
This flaw let a Nextcloud user who received a group share remove the share for the entire group, not just themselves. It is mainly a collaboration and authorization-control issue, not evidence of data theft from the provided sources. Exposure is limited to organizations running affected Nextcloud Server versions with group sharing enabled or used. Systems on 9.0.54, 10.0.0, or later are not identified as affected in the supplied CVE description. Treat this as a targeted remediation item for legacy Nextcloud deployments. Prioritize if group sharing supports business-critical workflows, because a low-privileged user could disrupt access for a wider team. Mitigation focus: Upgrade affected Nextcloud Server instances to 9.0.54, 10.0.0, or later.; Review the Nextcloud advisory for vendor-confirmed remediation details.; Restrict group sharing where business use does not require it..
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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CWE-285: Exact CWE lookup
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Open ATT&CK lookupCVE-2016-9464 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://github.com/nextcloud/server/commit/7289cb5ec0b812992ab0dfb889744b94bc0994f0CVE reference · x_refsource_MISC
- https://github.com/nextcloud/server/commit/3387e5d00fcf6b2ea6b285a091e5743f545e7202CVE reference · x_refsource_MISC
- https://github.com/nextcloud/server/commit/a5471b4a3e3f30e99e4de39c97c0c3b3c2f1618fCVE reference · x_refsource_MISC
- https://github.com/nextcloud/server/commit/e2c4f4f9aa11bc92e8f2212cce73841b922187e8CVE reference · x_refsource_MISC
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-007CVE reference · x_refsource_MISC
- https://hackerone.com/reports/153905CVE 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.
Improper Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.