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CVE Record

CVE-2018-4129: 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-2018-4129 is a WebKit memory corruption issue affecting several Apple products before their March 2018 updates. A victim visiting a crafted website could let an attacker run code or crash the application. The bundle does not provide CVSS, CWE, or confirmed exploitation evidence.

Executive priority

Treat this as a legacy exposure cleanup item with high impact if still present. It is not KEV-listed in the supplied bundle, but remote web content code execution justifies prompt remediation on any remaining vulnerable systems.

Technical view

The issue is in WebKit and is described as memory corruption reachable through crafted web content. Affected versions include 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 legacy Apple devices, Safari installations, and Windows systems running old iCloud or iTunes. Linux WebKit packages may also matter where Gentoo or Ubuntu advisories apply. Current, fully patched systems are less likely exposed.

Exploitation context

Sources describe remote code execution or denial of service through a crafted website. The source bundle does not cite CISA KEV listing, public exploitation, exploit maturity, or observed attacks, so active exploitation should not be assumed.

Researcher notes

The bundle gives product/version impact and high-level vulnerability class only. It does not provide CVSS, CWE, root-cause detail, exploit primitives, or named mitigations beyond vendor updates. Avoid claiming exploit availability without additional cited evidence.

Mitigation direction

  • Update iOS to 11.3 or later where supported.
  • Update Safari to 11.1 or later where supported.
  • Update iCloud for Windows to 7.4 or later.
  • Update iTunes for Windows to 12.7.4 or later.
  • Review Gentoo and Ubuntu advisories for applicable WebKit packages.

Validation and detection

  • Inventory Safari, iOS, tvOS, watchOS, iCloud, and iTunes versions.
  • Confirm no listed product remains below the fixed version.
  • Check Linux package status against Gentoo GLSA-201808-04 and Ubuntu USN-3635-1.
  • Prioritize internet-browsing endpoints and shared Windows workstations.
  • Record exceptions for unsupported legacy Apple hardware or software.
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 · low confidence lookup

CVE-2018-4129 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.