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CVE Record

CVE-2018-4373: Multiple memory corruption issues were addressed with improved memory handling.

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-4373 is an Apple memory corruption issue fixed in late-2018 Apple platform and Windows client updates. The business risk is mainly from old devices or installed Apple software that never received those updates. The source bundle does not provide CVSS, CWE, exploit, or impact detail.

Executive priority

Treat this as a legacy-software hygiene issue unless your environment still has the listed outdated Apple products. Prioritize verification on managed endpoints and Windows fleets using Apple software, but do not assume emergency exploitation without additional evidence.

Technical view

Apple addressed multiple memory corruption issues with improved memory handling. Affected versions are before iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1 for Windows, and iCloud for Windows 7.8. The bundle does not identify the vulnerable component, attack vector, or exact consequence.

Likely exposure

Exposure is likely limited to legacy Apple mobile/watch devices, older Safari installations, and Windows systems running outdated iTunes or iCloud. Modern, regularly updated assets should not be exposed based on the listed fixed versions.

Exploitation context

The source bundle marks KEV as false and provides no cited evidence of active exploitation. It also does not provide exploit maturity, proof-of-concept status, or attacker prerequisites, so exploitation context remains incomplete.

Researcher notes

The available record is sparse: no CVSS vector, CWE, affected component detail, or exploit evidence is included. Analysis should stay anchored to version exposure and Apple’s fixed-release guidance, with any deeper impact assessment requiring vendor advisory review.

Mitigation direction

  • Upgrade iOS devices to iOS 12.1 or later where supported.
  • Upgrade watchOS devices to watchOS 5.1 or later where supported.
  • Upgrade Safari to 12.0.1 or later.
  • Upgrade iTunes for Windows to 12.9.1 or later.
  • Upgrade iCloud for Windows to 7.8 or later.
  • Check Apple guidance for unsupported systems or exceptions.

Validation and detection

  • Inventory iOS, watchOS, Safari, iTunes for Windows, and iCloud for Windows versions.
  • Flag versions earlier than the fixed releases listed by Apple.
  • Confirm managed endpoints report successful update installation.
  • Review exception lists for unsupported legacy Apple devices or Windows hosts.
  • Verify no exposed asset relies on outdated Apple client software.
Prepared
Confidence
medium
Sources
7

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-2018-4373 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
6Source 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, watchOS, Safari, iTunes for Windows, iCloud for WindowsVersions prior to: iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8Listed
Weakness

CWE details

No CWE listed

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