CVE-2026-28883 Apple CVE debrief

Who should care

This vulnerability affects users of Apple devices, including iPhone, iPad, Mac, Apple TV, Apple Vision, and Apple Watch users. If you use any of these devices, you should ensure that your device is updated to the latest version to prevent potential crashes when processing web content.

Technical summary

The CVE-2026-28883 vulnerability is a use-after-free issue that occurs when the system attempts to access memory that has already been freed. This can lead to unexpected behavior, including process crashes. The issue is caused by inadequate memory management in Apple's web content processing. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.5, indicating a HIGH severity level. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Defensive priority

High priority should be given to updating affected Apple devices to the latest versions, as this vulnerability could lead to process crashes when processing web content. Additionally, users should exercise caution when visiting untrusted websites or clicking on suspicious links.

Recommended defensive actions

• Update Safari to version 26.5 or later
• Update iOS to version 26.5 or later
• Update iPadOS to version 26.5 or later
• Update macOS to version 26.5 or later
• Update tvOS to version 26.5 or later
• Update visionOS to version 26.5 or later
• Update watchOS to version 26.5 or later

Evidence notes

The CVE-2026-28883 vulnerability was published on May 11, 2026, and was last modified on June 30, 2026. The vulnerability affects multiple Apple products, including Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. Apple has released updates to fix this issue, and users are advised to update their devices to the latest versions.

Official resources