CVE-2018-4113: An issue was discovered in certain Apple products.

Security readout for executives and security teams

CVE-2018-4113 is a WebKit JavaScriptCore flaw in several Apple products. The published impact is an assertion failure caused by improper array indexing, which points to application instability or denial of service rather than confirmed code execution. Public sources in the bundle do not show active exploitation. Exposure is most likely where affected Apple software or related WebKit packages process untrusted JavaScript content. Relevant 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. Prioritize normal patch management rather than emergency response unless local telemetry shows crashes or exposure on unsupported systems. The issue affects widely used Apple and WebKit components, but the provided evidence shows no active exploitation and no confirmed impact beyond assertion failure. Mitigation focus: Update affected Apple products to the fixed versions or later.; Patch Safari to 11.1 or later where applicable.; Update iCloud for Windows to 7.4 or later..

Prepared

Jun 7, 2026, 14:03 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.