CVE-2026-86946: macOS use-after-free in kernel memory management

CVE-2026-86946 · Severity: info · Published 2026-10-26

A use-after-free vulnerability in macOS kernel memory management can allow a malicious application to cause unexpected system termination or corrupt kernel memory. This could lead to system crashes, data loss, or provide a foothold for privilege escalation attacks. Apple has addressed this issue with improved memory management in recent OS updates.

Technologies: Apple macOS Golden Gate, Apple macOS Sequoia. Vendors: Apple.

Quick answers

Is CVE-2026-86946 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-86946 being exploited in the wild.
How severe is CVE-2026-86946?
Informational severity, published 26 October 2026.
Which products and versions are affected?
Apple macOS Golden Gate before 27.2; Apple macOS Sequoia before 15.8.2; Apple macOS Tahoe before 26.7.2.
Is there a fix for CVE-2026-86946?
Yes: fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-86946 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-86946?
Check whether you run Apple macOS Golden Gate, Apple macOS Sequoia or Apple macOS Tahoe 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: macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2

Technical details

A use-after-free vulnerability exists in macOS kernel memory management, allowing an app with local execution privileges to access memory after it has been freed. An attacker can trigger unexpected system termination or corruption of kernel memory structures, potentially leading to privilege escalation or denial of service.

Affected products

  • Apple macOS Golden Gate before 27.2
  • Apple macOS Sequoia before 15.8.2
  • Apple macOS Tahoe before 26.7.2

Timeline

  • 2026-10-26: disclosed

References

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