CVE-2026-112637: Apple Safari use-after-free in memory management

CVE-2026-112637 · Severity: high · CVSS 8.8 · Published 2026-10-26

Safari is a web browser used by millions of users on Apple devices to view websites and web content. A use-after-free vulnerability in Safari's memory management could allow an attacker who crafts a malicious webpage to execute arbitrary code on a victim's device, potentially leading to data theft, account compromise, or complete device control. The vulnerability affects Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS across multiple versions.

Technologies: Apple Ios, Apple iPadOS, Apple macOS Golden Gate, Apple Safari, Apple Tvos, Apple Visionos, Apple watchOS. Vendors: Apple.

Quick answers

Is CVE-2026-112637 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112637 being exploited in the wild.
How severe is CVE-2026-112637?
High severity, with a CVSS score of 8.8, published 26 October 2026.
Which products and versions are affected?
Apple Ios before 27.2; Apple iPadOS before 27.2; Apple macOS Golden Gate before 27.2; Apple Safari before 27.2; and 3 more.
Is there a fix for CVE-2026-112637?
Yes: fixed in Safari 27.2, iOS 27.2, iPadOS 27.2, macOS Golden Gate 27.2, tvOS 27.2, visionOS 27.2, watchOS 27.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-112637 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2026-112637?
Check whether you run Apple Ios, Apple iPadOS, Apple macOS Golden Gate 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.

How to fix

  • Fixed in: Safari 27.2, iOS 27.2, iPadOS 27.2, macOS Golden Gate 27.2, tvOS 27.2, visionOS 27.2, watchOS 27.2

Technical details

A use-after-free vulnerability exists in Safari's memory management subsystem. An attacker can exploit this by processing maliciously crafted web content delivered over the network, requiring only that a user visits a malicious website—no authentication or user interaction beyond viewing the page is needed. Successful exploitation leads to arbitrary code execution in the context of the Safari process.

Affected products

  • Apple Safari before 27.2
  • Apple iOS before 27.2
  • Apple iPadOS before 27.2
  • Apple macOS Golden Gate before 27.2
  • Apple tvOS before 27.2
  • Apple visionOS before 27.2
  • Apple watchOS before 27.2

Timeline

  • 2026-10-26: disclosed
  • 2026-10-26: patched

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.