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CVE Record

CVE-2018-4438: A logic issue existed resulting in memory corruption.

A logic issue existed resulting in memory corruption. This was addressed with improved state management. This issue affected versions prior to iOS 12.1.1, tvOS 12.1.1, watchOS 5.1.2, Safari 12.0.2, iTunes 12.9.2 for Windows, iCloud for Windows 7.9.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

Apple fixed a memory-corruption flaw in several Apple operating systems and Windows support apps. The source bundle does not show active exploitation, severity scoring, or detailed impact. Business urgency mainly applies to environments still running pre-fix versions.

Executive priority

Treat this as a legacy exposure cleanup item unless affected versions are still present. If they are, prioritize remediation because memory corruption flaws can carry meaningful security risk, even though this bundle lacks severity and exploitation details.

Technical view

CVE-2018-4438 is described as a logic issue causing memory corruption, addressed by improved state management. Affected products are versions before iOS 12.1.1, tvOS 12.1.1, watchOS 5.1.2, Safari 12.0.2, iTunes 12.9.2 for Windows, and iCloud for Windows 7.9.

Likely exposure

Exposure is likely limited to legacy Apple devices, Safari installations, or Windows systems with old iTunes or iCloud for Windows. Fully updated systems at or beyond the listed versions are not indicated as affected in the bundle.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of exploitation. It also does not state attack vector, required user interaction, privileges, or exploit maturity, so exploitation context remains incomplete.

Researcher notes

The public description is sparse: no CVSS, CWE, component detail, attack vector, or proof-of-exploitation evidence is provided. Analysis should stay anchored to Apple’s fixed-version statements and avoid inferring affected components or exploitability beyond memory corruption.

Mitigation direction

  • Upgrade affected Apple operating systems and applications to the listed fixed versions or later.
  • Inventory iOS, tvOS, watchOS, Safari, iTunes for Windows, and iCloud for Windows versions.
  • Retire or isolate systems that cannot be upgraded from affected versions.
  • Check current Apple guidance for any product-specific remediation notes.

Validation and detection

  • Confirm device and application versions against Apple’s fixed-version list.
  • Use MDM or endpoint inventory to find pre-fix Apple software versions.
  • Check Windows endpoints for legacy iTunes and iCloud for Windows installations.
  • Document any unsupported assets that remain below fixed versions.
Prepared
Confidence
medium
Sources
8

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-2018-4438 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
7Source 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/aiOS, tvOS, watchOS, Safari, iTunes for Windows, iCloud for WindowsVersions prior to: iOS 12.1.1, tvOS 12.1.1, watchOS 5.1.2, Safari 12.0.2, iTunes 12.9.2 for Windows, iCloud for Windows 7.9Listed
Weakness

CWE details

No CWE listed

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