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CVE Record

CVE-2018-4127: 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. 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

This is a WebKit memory-corruption flaw affecting older Apple software. A user visiting a malicious website could have the application crash or allow remote code execution. The bundle does not provide CVSS, confirmed exploitation, or detailed root cause information.

Executive priority

Prioritize remediation where old browser or Apple client software remains in use. The business risk is user-driven compromise through web content, but the provided sources do not show active exploitation.

Technical view

CVE-2018-4127 affects WebKit in iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, iTunes for Windows before 12.7.4, and tvOS before 11.3. The stated impact is arbitrary code execution or denial of service via crafted web content.

Likely exposure

Exposure is most likely on unmanaged or legacy Apple endpoints, Windows systems with old iCloud or iTunes, and tvOS devices running pre-fix versions. Browser-facing attack surface increases risk because WebKit processes untrusted web content.

Exploitation context

The source bundle says remote attackers can trigger the issue using a crafted website. It does not cite CISA KEV listing or any source confirming active exploitation. Treat exploitation status as unconfirmed from the provided evidence.

Researcher notes

The public bundle gives affected version thresholds and broad WebKit memory-corruption impact, but no CVSS vector, CWE, vulnerable code path, or exploit telemetry. Avoid asserting broader product impact beyond cited Apple and referenced distro advisories.

Mitigation direction

  • Update iOS devices to 11.3 or later.
  • Update Safari to 11.1 or later.
  • Update iCloud for Windows to 7.4 or later.
  • Update iTunes for Windows to 12.7.4 or later.
  • Update tvOS devices to 11.3 or later.
  • Review Apple, Ubuntu, and Gentoo advisories for environment-specific package guidance.

Validation and detection

  • Inventory devices and applications for the affected version ranges.
  • Confirm Safari, iOS, tvOS, iCloud, and iTunes versions after updating.
  • Check endpoint management records for legacy or unmanaged Apple devices.
  • Review vulnerability scanner findings for CVE-2018-4127.
  • Verify applicable Linux distribution advisories if WebKit packages are present.
Prepared
Confidence
medium
Sources
9

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

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 · low confidence lookup

CVE-2018-4127 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
8Source 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.