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CVE Record

CVE-2018-4376: 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 analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-4376 is an Apple memory corruption vulnerability fixed in 2018 updates across iOS, watchOS, Safari, iTunes for Windows, and iCloud for Windows. The supplied sources do not provide CVSS, CWE, detailed impact, or exploit evidence, so business urgency should focus on finding obsolete Apple software still present.

Executive priority

Medium operational priority for organizations with legacy Apple or Windows desktop software. The absence of supplied severity and exploitation evidence limits emergency justification, but unsupported outdated clients should still be removed from production exposure.

Technical view

The CVE describes multiple memory corruption issues addressed through improved memory handling. Affected versions are those before iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, and iCloud for Windows 7.8. The source bundle does not specify vulnerable components, attack prerequisites, or concrete impact.

Likely exposure

Exposure is most likely on legacy Apple mobile devices, Macs running old Safari, and Windows systems with outdated iTunes or iCloud. Modern managed fleets should have low residual exposure if update baselines exclude the listed pre-fix versions.

Exploitation context

The provided bundle does not show CISA KEV listing or any cited public evidence of active exploitation. Treat this as a historical Apple memory corruption issue with uncertain exploitability based on the supplied evidence.

Researcher notes

Evidence is sparse: no CVSS, CWE, affected component detail, or exploit status appears in the supplied bundle. Researchers should rely on Apple’s linked advisories and CVE metadata, and avoid assuming attack vector or impact beyond memory corruption.

Mitigation direction

  • Upgrade iOS to 12.1 or later where applicable.
  • Upgrade watchOS to 5.1 or later where applicable.
  • 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.
  • Review Apple advisories for current vendor guidance.

Validation and detection

  • Inventory Apple device and application versions across managed endpoints.
  • Flag iOS, watchOS, Safari, iTunes, and iCloud versions below fixed releases.
  • Confirm unsupported legacy devices are isolated or retired.
  • Check endpoint management reports for update compliance.
  • Document any remaining exceptions and business owner acceptance.
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-2018-4376 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.