CVE-2023-32434: Apple Multiple Products Integer Overflow Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: yes — in CISA KEV since 2023-06-23
EPSS: 51.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-23 · updated 2026-06-17
Weakness: CWE-190

Description

An integer overflow was addressed with improved input validation. This issue is fixed in watchOS 9.5.2, macOS Big Sur 11.7.8, iOS 15.7.7 and iPadOS 15.7.7, macOS Monterey 12.6.7, watchOS 8.8.1, iOS 16.5.1 and iPadOS 16.5.1, macOS Ventura 13.4.1. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

Affected products

Apple iPadOS: before 15.7.7; from 16.0 before 16.5.1 — fixed in 15.7.7, 16.5.1
Apple Iphone Os: before 15.7.7; from 16.0 before 16.5.1 — fixed in 15.7.7, 16.5.1
Apple macOS: from 11.0 before 11.7.8; from 12.0.0 before 12.6.7; from 13.0 before 13.4.1 — fixed in 11.7.8, 12.6.7, 13.4.1
Apple watchOS: before 8.8.1; from 9.0 before 9.5.2 — fixed in 8.8.1, 9.5.2

How to fix

Upgrade to a fixed version: Apple iPadOS 15.7.7, 16.5.1; Apple Iphone Os 15.7.7, 16.5.1; Apple macOS 11.7.8, 12.6.7, 13.4.1; Apple watchOS 8.8.1, 9.5.2. Check the vendor advisory for mitigations.

References

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