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CVE Record

CVE-2018-4271: Multiple memory corruption issues were addressed with improved input validation.

Multiple memory corruption issues were addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-4271 is an Apple memory corruption issue fixed through improved input validation. The provided sources list affected versions of iOS, tvOS, watchOS, Safari, iTunes for Windows, and iCloud for Windows. Business urgency depends on whether legacy Apple software remains in use.

Executive priority

Make this a targeted hygiene item for legacy Apple software. Escalate if inventory finds affected versions still present, especially on endpoints outside normal patch management.

Technical view

The source bundle describes multiple memory corruption issues addressed by Apple with improved input validation. Affected products are versions before iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, and iCloud for Windows 7.6.

Likely exposure

Exposure is most likely on unmanaged or legacy Apple devices, Safari installations, and Windows systems retaining older iTunes or iCloud versions. Current supported, patched systems are less likely to be exposed.

Exploitation context

The provided bundle does not show CISA KEV listing, public active exploitation, CVSS scoring, or exploit maturity. Treat exploitation status as unconfirmed, not actively exploited.

Researcher notes

The evidence is sparse: no CVSS, CWE, detailed impact, or exploitation source is included. Analysis should remain limited to Apple’s stated affected products, fixed versions, and input-validation remediation.

Mitigation direction

  • Upgrade affected Apple products to the listed fixed versions or later.
  • Check Apple advisories for product-specific guidance and superseding updates.
  • Remove or replace unsupported legacy Apple software where updates are unavailable.
  • Prioritize unmanaged endpoints and Windows hosts running iTunes or iCloud.

Validation and detection

  • Inventory installed versions of iOS, tvOS, watchOS, Safari, iTunes, and iCloud.
  • Compare versions against the fixed-version thresholds in Apple guidance.
  • Confirm patch deployment records for devices and Windows endpoints.
  • Flag any systems below fixed versions for remediation tracking.
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-2018-4271 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 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6Listed
Weakness

CWE details

No CWE listed

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