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CVE Record

CVE-2018-4163: 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 remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2018-4163 is a WebKit memory corruption flaw in older Apple software. A malicious website could make the affected browser or WebKit-using application crash or run attacker-controlled code. The business risk is highest for devices or Windows endpoints still running the pre-fixed Apple versions named in the advisories.

Executive priority

Treat this as high priority only where legacy affected versions remain. The flaw allows code execution through web content, but the bundle provides no active exploitation evidence. Focus on confirming no outdated Apple or WebKit software remains in managed environments.

Technical view

The issue is in WebKit and affects 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. The CVE describes remote arbitrary code execution or denial of service via crafted web content. CVSS and CWE data are not provided in the bundle.

Likely exposure

Exposure is likely limited to legacy Apple software and possibly WebKit packages covered by the referenced Linux vendor advisories. Current, fully updated systems are less likely to be exposed. Organizations with unmanaged iOS/macOS browsing, old Windows iTunes or iCloud installs, or unsupported devices should verify versions.

Exploitation context

The source bundle does not show CISA KEV listing or other evidence of active exploitation. The attack vector is remote web content, so successful abuse would generally require a user or embedded WebKit component to process a crafted website.

Researcher notes

Evidence is sufficient to identify affected version thresholds and WebKit impact, but incomplete for CVSS, CWE, root-cause detail, and exploit status. Do not infer active exploitation from the remote attack surface alone; KEV is false in the supplied bundle.

Mitigation direction

  • Update iOS, Safari, iCloud for Windows, iTunes for Windows, tvOS, and watchOS beyond fixed versions.
  • Apply relevant WebKit package updates from Gentoo and Ubuntu advisories where those platforms are used.
  • Remove or isolate unsupported devices that cannot receive the fixed Apple releases.
  • Limit untrusted browsing from legacy endpoints until updates or retirement are complete.
  • Check Apple and Linux vendor advisories for any platform-specific guidance not captured here.

Validation and detection

  • Inventory Apple software versions against the fixed minimum versions named in the CVE description.
  • Identify Windows endpoints with iTunes before 12.7.4 or iCloud before 7.4.
  • Review Linux package advisories for WebKit-related packages referenced by Gentoo or Ubuntu.
  • Confirm mobile device management reports show iOS 11.3 or later where applicable.
  • Check crash and endpoint telemetry for suspicious WebKit application crashes on legacy systems.
Prepared
Confidence
high
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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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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CVE-2018-4163 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.