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

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2023-06-23. EPSS: 51.5% chance of exploitation in the next 30 days.

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 (fixed in 15.7.7); from 16.0, before 16.5.1 (fixed in 16.5.1)
• Apple iPhone OS: before 15.7.7 (fixed in 15.7.7); from 16.0, before 16.5.1 (fixed in 16.5.1)
• Apple macOS: from 11.0, before 11.7.8 (fixed in 11.7.8); from 12.0.0, before 12.6.7 (fixed in 12.6.7); from 13.0, before 13.4.1 (fixed in 13.4.1)
• Apple watchOS: before 8.8.1 (fixed in 8.8.1); from 9.0, before 9.5.2 (fixed in 9.5.2)

Published 2023-06-23. Last modified 2026-06-17.