CVE-2026-86944

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-20 · updated 2026-10-30
Weakness: CWE-787

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

Affected products

Apple iOS and iPadOS: before 26.7 — fixed in 26.7
Apple macOS: before 15.8; before 26.7 — fixed in 15.8, 26.7

How to fix

Upgrade to a fixed version: Apple iOS and iPadOS 26.7; Apple macOS 15.8, 26.7. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/149041
https://support.apple.com/en-us/149042
https://support.apple.com/en-us/149043

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