CVE-2026-86973: Apple Safari out-of-bounds read in web content processing

CVE-2026-86973 · Severity: info · Published 2026-10-26

Safari is a web browser that handles internet content on Apple devices. An out-of-bounds read vulnerability in Safari's content processing could allow an attacker to trigger an unexpected browser crash when a user visits a maliciously crafted website. While the crash itself is a denial of service, the out-of-bounds read could potentially leak sensitive information from memory.

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

Quick answers

Is CVE-2026-86973 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-86973 being exploited in the wild.
How severe is CVE-2026-86973?
Informational severity, published 26 October 2026.
Which products and versions are affected?
Apple Ios before 26.7.2 and before 27.2; Apple iPadOS before 26.7.2 and before 27.2; Apple macOS Golden Gate before 27.2; Apple Safari before 27.2.
Is there a fix for CVE-2026-86973?
Yes: fixed in Safari 27.2, iOS 26.7.2 and iOS 27.2, iPadOS 26.7.2 and iPadOS 27.2, macOS Golden Gate 27.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-86973 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-86973?
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 26.7.2 and iOS 27.2, iPadOS 26.7.2 and iPadOS 27.2, macOS Golden Gate 27.2

Technical details

An out-of-bounds read vulnerability exists in Safari's web content processing engine, triggered when maliciously crafted web content is encountered. The vulnerability was fixed through improved bounds checking. Attack vector is network-based with no authentication required; user interaction is limited to visiting a malicious website. Successful exploitation results in unexpected process termination (denial of service).

Affected products

  • Apple Safari before 27.2
  • Apple iOS before 26.7.2 and before 27.2
  • Apple iPadOS before 26.7.2 and before 27.2
  • Apple macOS Golden Gate before 27.2

Timeline

  • 2026-10-26: disclosed

References

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