Is CVE-2026-28947 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-28947 being exploited in the wild.

How severe is CVE-2026-28947?

High severity, with a CVSS score of 8.8, published 11 May 2026.

Which products and versions are affected?

Apple iPadOS 26.5, before 26.5, Before 26.5; Apple macOS 26.5, before 26.5, Before 26.5; Apple Safari before 26.5, Before 26.5; Apple Tvos 26.5, before 26.5, Before 26.5; and 2 more.

Is there a fix for CVE-2026-28947?

A patch was published on 2026-05-11: Fixed in Safari 26.5 and related OS updates. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-28947 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-28947?

Check whether you run Apple iPadOS, Apple Iphone Os, Apple macOS or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-28947: Apple Safari and OS use-after-free in memory management

CVE-2026-28947 · Severity: high · CVSS 8.8 · Published 2026-05-11

A security vulnerability has been identified in Apple's Safari web browser and various operating systems including iOS and macOS. This flaw allows a malicious website to potentially crash the browser or execute unauthorized actions when a user visits a specially crafted page. Exploitation could lead to the theft of sensitive user data or a complete compromise of the device's security.

Technologies: Apple iPadOS, Apple Iphone Os, Apple macOS, Apple Safari, Apple Tvos, Apple Visionos, Apple watchOS. Vendors: Apple.

Quick answers

Is CVE-2026-28947 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-28947 being exploited in the wild.
How severe is CVE-2026-28947?: High severity, with a CVSS score of 8.8, published 11 May 2026.
Which products and versions are affected?: Apple iPadOS 26.5, before 26.5, Before 26.5; Apple macOS 26.5, before 26.5, Before 26.5; Apple Safari before 26.5, Before 26.5; Apple Tvos 26.5, before 26.5, Before 26.5; and 2 more.
Is there a fix for CVE-2026-28947?: A patch was published on 2026-05-11: Fixed in Safari 26.5 and related OS updates. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-28947 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-28947?: Check whether you run Apple iPadOS, Apple Iphone Os, Apple macOS or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A use-after-free vulnerability exists in Apple's Safari browser and the underlying web processing components of iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The issue stems from improper memory management when handling web content. A remote attacker can exploit this by enticing a user to visit a maliciously crafted website (UI:R). Successful exploitation can lead to arbitrary code execution or an unexpected application crash. The vulnerability was addressed by improving memory management in version 26.5 of the affected platforms.

Affected products

Apple Safari before 26.5
Apple iOS before 26.5
Apple iPadOS before 26.5
Apple macOS Tahoe before 26.5
Apple tvOS before 26.5
Apple visionOS before 26.5
Apple watchOS before 26.5

Timeline

2026-05-11: disclosed
2026-05-11: patched: Fixed in Safari 26.5 and related OS updates.

References

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