Quick answers
- Is CVE-2026-84599 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84599 being exploited in the wild.
- How severe is CVE-2026-84599?
- Informational severity, published 26 October 2026.
- Which products and versions are affected?
- Apple Ios before 27; Apple iPadOS before 27; Apple macOS before Golden Gate 27; Apple Tvos before 27; and 2 more.
- Is there a fix for CVE-2026-84599?
- Yes: fixed in iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-84599 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-84599?
- Check whether you run Apple Ios, Apple iPadOS, 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.
How to fix
- Fixed in: iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27
Technical details
An out-of-bounds write or memory handling vulnerability in Apple's kernel-level components allows a local app to cause unexpected system termination or corrupt kernel memory. The vulnerability is addressed through improved bounds checking and input validation across affected operating systems. No network or user interaction is required beyond installing a malicious app.
Affected products
- Apple iOS before 27
- Apple iPadOS before 27
- Apple macOS before Golden Gate 27
- Apple tvOS before 27
- Apple visionOS before 27
- Apple watchOS before 27
Timeline
- 2026-10-26: disclosed