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CVE Record

CVE-2018-4146: An issue was discovered in certain Apple products.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. Safari before 11.1 is affected. iCloud before 7.4 on Windows is affected. iTunes before 12.7.4 on Windows is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "WebKit" component. It allows attackers to cause a denial of service (memory corruption) via a crafted web site.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-4146 is a WebKit memory corruption issue in older Apple software. A malicious website could trigger a denial of service, likely crashing the browser or WebKit-using application. The provided sources do not show active exploitation or a CVSS score, but exposure is realistic wherever legacy Apple or Windows Apple software remains installed.

Executive priority

Treat this as a legacy exposure cleanup item unless vulnerable software is still broadly deployed. It is remotely reachable through web content, but the provided evidence supports denial of service only and does not show active exploitation.

Technical view

The CVE describes a WebKit memory corruption flaw reachable through crafted web content. Affected versions listed are iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, iTunes for Windows before 12.7.4, tvOS before 11.3, and watchOS before 4.3.

Likely exposure

Exposure is most likely on unmanaged, legacy, or unsupported devices and Windows endpoints running old Apple components. Internet-facing browsing behavior increases practical risk because the trigger is a crafted website.

Exploitation context

The source bundle reports no CISA KEV listing and provides no cited evidence of active exploitation. The described attack path is remote web content causing memory corruption and denial of service, not confirmed code execution.

Researcher notes

Evidence is limited to the CVE description and vendor advisory references. The affected component is WebKit, but the supplied affected-product text names specific Apple releases. Do not broaden scope beyond those products without reviewing the linked vendor advisories.

Mitigation direction

  • Upgrade affected Apple software to the fixed versions or later.
  • Prioritize Safari, iOS, and Windows endpoints with iTunes or iCloud installed.
  • Restrict untrusted browsing on systems that cannot be updated promptly.
  • Retire or isolate devices that cannot run supported fixed versions.
  • Check Apple and distro advisories for platform-specific update guidance.

Validation and detection

  • Inventory Safari, iOS, tvOS, watchOS, iCloud, and iTunes versions.
  • Confirm versions meet or exceed the fixed releases listed in the CVE.
  • Check vulnerability scanner results for CVE-2018-4146 after updates.
  • Review endpoint software inventory for legacy Windows Apple components.
  • Document exceptions for devices that cannot be remediated.
Prepared
Confidence
medium
Sources
10

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-2018-4146 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
9Source 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/an/an/aListed
Weakness

CWE details

No CWE listed

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