CVE-2026-86879

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-14 · updated 2026-10-26
Weakness: CWE-20

Description

A denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27. A remote attacker may be able to cause a denial-of-service.

Affected products

Apple iPadOS: before 27.0 — fixed in 27.0
Apple Iphone Os: before 27.0 — fixed in 27.0
Apple iOS and iPadOS: before 27 — fixed in 27

How to fix

Upgrade to a fixed version: Apple iPadOS 27.0; Apple Iphone Os 27.0; Apple iOS and iPadOS 27. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/149034

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