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CVE Record

CVE-2020-24716: OpenZFS before 2.0.0-rc1, when used on FreeBSD, allows execute permissions for all directories.

OpenZFS before 2.0.0-rc1, when used on FreeBSD, allows execute permissions for all directories.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-24716 concerns OpenZFS on FreeBSD before 2.0.0-rc1 granting execute permission on all directories. That can weaken expected directory access controls. The public record does not provide CVSS, affected product packaging, or observed exploitation, so urgency depends on where FreeBSD OpenZFS is used and whether permissions matter to hosted data.

Executive priority

Treat as a targeted hygiene issue, not an internet-scale emergency based on current evidence. Prioritize FreeBSD storage systems with multiple users, shared datasets, or sensitive directory access controls.

Technical view

The issue is described as a FreeBSD-specific OpenZFS permissions flaw before 2.0.0-rc1. Directory execute permission controls traversal, so unintended execute bits can alter access behavior even when file reads remain separately controlled. Available sources point to an OpenZFS commit, FreeBSD review, and iXsystems ticket, but not detailed exploitability or release mapping.

Likely exposure

Likely exposure is limited to FreeBSD systems or appliances using OpenZFS versions before 2.0.0-rc1. The bundle does not identify CPEs, downstream package versions, or specific vendor appliance releases.

Exploitation context

CISA KEV is false and the supplied sources do not report active exploitation. Practical risk depends on local users, dataset permissions, jails, shared hosting, and assumptions that directory traversal was restricted.

Researcher notes

Evidence is sparse: no CVSS, CWE, CPE list, or exploitation detail is supplied. Focus research on FreeBSD OpenZFS version provenance, downstream backports, and whether directory execute permissions changed security boundaries in the deployed environment.

Mitigation direction

  • Inventory FreeBSD hosts and appliances using OpenZFS.
  • Check whether builds predate OpenZFS 2.0.0-rc1.
  • Review FreeBSD, OpenZFS, and vendor guidance for fixed packages.
  • Prioritize upgrades where untrusted local users share datasets.
  • Reassess directory permissions on sensitive datasets after remediation.

Validation and detection

  • Confirm the OpenZFS version on each FreeBSD system.
  • Verify whether the referenced OpenZFS fix commit is included.
  • Review representative datasets for unintended directory execute permissions.
  • Check vendor release notes for CVE-2020-24716 coverage.
  • Document systems where package mapping remains uncertain.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2020-24716 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.