Security readout for executives and security teams
This flaw let a read-only recipient of a shared file restore an older version, effectively changing content they should only view. It affects legacy Nextcloud Server before 9.0.52 and ownCloud Server before 9.0.4. The business risk is unauthorized rollback or disruption of shared documents, not full server compromise based on the supplied evidence. Exposure is most likely where legacy Nextcloud or ownCloud 9.0 deployments remain in use with shared files, read-only recipients, and file versioning enabled. Modern or upgraded deployments are not identified as affected in the supplied bundle. Treat as a moderate-priority legacy collaboration-platform issue. It can undermine document integrity and trust in read-only sharing, but the supplied evidence does not show remote unauthenticated compromise or known active exploitation. Mitigation focus: Upgrade Nextcloud Server to 9.0.52 or later if still on an affected release.; Upgrade ownCloud Server to 9.0.4 or later if still on an affected release.; Review the Nextcloud and ownCloud advisories for vendor-supported remediation guidance..
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-275: Exact CWE lookup
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Open ATT&CK lookupCVE-2016-9462 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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/1208953ba1d4d55a18a639846bbcdd66a2d5bc5eCVE reference · x_refsource_MISC
- https://github.com/owncloud/core/commit/c93eca49c32428ece03dd67042772d5fa62c8d6eCVE reference · x_refsource_MISC
- https://owncloud.org/security/advisory/?id=oc-sa-2016-015CVE reference · x_refsource_MISC
- https://github.com/owncloud/core/commit/3b056fa68ce502ceb0db9b446dab3b9e7b10dd13CVE reference · x_refsource_MISC
- https://github.com/owncloud/core/commit/d31720b6f1e8c8dfeb5e8805ab35ad7c8000b2f1CVE reference · x_refsource_MISC
- https://hackerone.com/reports/146067CVE reference · x_refsource_MISC
- https://github.com/owncloud/core/commit/23383080731d092e079986464a8c4c9ffcb79f4cCVE reference · x_refsource_MISC
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-005CVE 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.
Permission Issues
Permission Issues represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.