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CVE Record

CVE-2018-4126: A memory corruption issue was addressed with improved memory handling.

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5, iTunes 12.9 for Windows, iCloud for Windows 7.7.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-4126 is an Apple memory corruption vulnerability fixed through improved memory handling. It affected software older than iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5, iTunes 12.9 for Windows, and iCloud for Windows 7.7. The bundle gives no CVSS, CWE, impact detail, or active exploitation evidence.

Executive priority

Prioritize this as a legacy exposure cleanup item unless your environment still has many older Apple or Windows Apple-client installations. The record lacks severity and exploitation evidence, but memory corruption flaws can carry serious impact when reachable.

Technical view

The public record describes a memory corruption issue, but does not identify the component, trigger, privilege boundary, or resulting impact. Apple says the issue was addressed with improved memory handling across multiple Apple platforms and Windows Apple client software. Exposure assessment depends mainly on finding legacy versions below the fixed releases.

Likely exposure

Exposure is most likely in unmanaged or legacy endpoints still running pre-iOS 12, pre-macOS Mojave 10.14, pre-tvOS 12, pre-watchOS 5, iTunes for Windows before 12.9, or iCloud for Windows before 7.7.

Exploitation context

The supplied sources do not show CISA KEV listing, public exploitation, exploit availability, or exploitation in the wild. Treat exploitation status as unconfirmed, not absent.

Researcher notes

The record is sparse: no component, vector, impact statement, CVSS, CWE, or exploit context is provided. Avoid asserting remote code execution, privilege escalation, or active exploitation without additional vendor or threat intelligence evidence.

Mitigation direction

  • Upgrade affected Apple platforms to the listed fixed versions or later.
  • Upgrade iTunes for Windows to 12.9 or later where installed.
  • Upgrade iCloud for Windows to 7.7 or later where installed.
  • Check current Apple guidance for unsupported legacy systems.
  • Remove unused iTunes or iCloud for Windows installations.

Validation and detection

  • Inventory endpoint OS versions against the affected version thresholds.
  • Identify Windows hosts with iTunes or iCloud installed.
  • Confirm installed Apple software versions meet or exceed fixed releases.
  • Review MDM, EDR, or asset data for unmanaged legacy Apple devices.
  • Document exceptions where upgrades are blocked or unsupported.
Prepared
Confidence
medium
Sources
9

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-2018-4126 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
8Source 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, macOS, tvOS, watchOS, iTunes for Windows, iCloud for WindowsVersions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5, iTunes 12.9 for Windows, iCloud for Windows 7.7Listed
Weakness

CWE details

No CWE listed

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