Security readout for executives and security teams
Plain-English summary
CVE-2018-4346 is an Apple macOS issue where improper validation could allow local file access. Apple says input sanitization fixed it and that versions before macOS Mojave 10.14 were affected. Business concern is mainly legacy Mac exposure; available sources do not identify active exploitation or a precise attack path.
Executive priority
Treat this as a legacy macOS hygiene issue unless pre-Mojave systems remain in production. Urgency rises for devices storing sensitive files or used by privileged staff.
Technical view
The CVE describes a validation flaw in macOS that permitted local file access. Apple remediated it with input sanitization. Public records identify affected versions only as prior to macOS Mojave 10.14 and do not provide CVSS, CWE, vulnerable component details, prerequisites, or impact scope beyond local file access.
Likely exposure
Known exposure is limited to Macs running versions before macOS Mojave 10.14. Systems updated to macOS Mojave 10.14 or later are not identified as affected in the supplied sources.
Exploitation context
The source bundle marks KEV as false, and the cited sources do not claim active exploitation. Public detail is too limited to assess whether exploitation required local access, user interaction, or a specific application context.
Researcher notes
The available record is sparse: no CVSS, CWE, component name, exploit prerequisites, or proof-of-concept details are provided. Analysis should stay bounded to Apple’s stated local file access impact and fixed-version guidance.
Mitigation direction
- Upgrade affected Macs to macOS Mojave 10.14 or later where supported.
- Prioritize replacement or isolation of Macs that cannot run a fixed macOS release.
- Review Apple security update pages for environment-specific guidance and related advisories.
Validation and detection
- Inventory macOS versions and identify any systems below macOS Mojave 10.14.
- Confirm vulnerable legacy systems have compensating controls if upgrade is not possible.
- Check vulnerability management records for CVE-2018-4346 closure evidence.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-4346 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://support.apple.com/kb/HT209193CVE reference · x_refsource_MISC
- https://support.apple.com/kb/HT209139CVE 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.