Security readout for executives and security teams
Plain-English summary
CVE-2018-4399 is an Apple platform access-control issue involving privileged API calls. Apple says it was fixed by adding restrictions. The main business concern is older Apple devices that were not upgraded to iOS 12, macOS Mojave 10.14, tvOS 12, or watchOS 5.
Executive priority
Treat this as a legacy exposure cleanup item unless old Apple devices remain in production. If they do, prioritize remediation because the issue involves privileged API access, even though public severity and exploitation evidence are incomplete.
Technical view
The public record describes an access issue in privileged API calls, addressed with additional restrictions. Affected products are iOS, macOS, tvOS, and watchOS versions before the named 2018 releases. No CVSS score, CWE, exploit mechanics, or affected component details are provided in the source bundle.
Likely exposure
Exposure is most likely limited to legacy Apple endpoints or embedded-use Apple devices still running versions earlier than iOS 12, macOS Mojave 10.14, tvOS 12, or watchOS 5. Fully upgraded or currently supported devices are less likely to remain exposed.
Exploitation context
The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. Public details are sparse, so exploitation prerequisites, attacker position, and practical impact cannot be confirmed from the provided sources.
Researcher notes
The record lacks CVSS, CWE, component names, and exploit conditions. Analysis should stay tied to Apple’s advisory language: privileged API access issue, fixed by additional restrictions, affecting versions before the listed 2018 OS releases.
Mitigation direction
- Upgrade affected devices to the fixed Apple OS releases or later.
- Check Apple security advisories for product-specific update guidance.
- Identify unsupported Apple devices and plan retirement or isolation.
- Prioritize managed endpoints that can access sensitive business systems.
Validation and detection
- Inventory Apple OS versions across MDM and asset records.
- Confirm devices meet or exceed the fixed release versions.
- Flag unmanaged or unsupported Apple devices for remediation review.
- Retain evidence of update status for vulnerability management records.
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-2018-4399 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/HT209107CVE reference · x_refsource_MISC
- https://support.apple.com/kb/HT209193CVE reference · x_refsource_MISC
- https://support.apple.com/kb/HT209106CVE reference · x_refsource_MISC
- https://support.apple.com/kb/HT209139CVE reference · x_refsource_MISC
- https://support.apple.com/kb/HT209108CVE 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.