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CVE-2026-28883 Apple CVE debrief

CVE-2026-28883 is a use-after-free issue that was addressed with improved memory management in various Apple products, including Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The issue could lead to an unexpected process crash when processing maliciously crafted web content. This vulnerability has a CVSS score of 7.5 and is considered HIGH severity. Apple has released updates to fix this issue, and users are advised to update their devices to the latest versions. The CVE was published on May 11, 2026, and was last modified on June 30, 2026.

Vendor
Apple
Product
Safari
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-11
Original CVE updated
2026-07-15
Advisory published
2026-05-11
Advisory updated
2026-07-15

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-28883 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-28883

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-28883 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-28883

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.