CVE-2023-42871

Severity: high (CVSS 7.8 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: 2024-01-10 · updated 2026-06-17
Weakness: CWE-787

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14, iOS 17 and iPadOS 17. An app may be able to execute arbitrary code with kernel privileges.

Affected products

Apple iPadOS: before 17.0 — fixed in 17.0
Apple Iphone Os: before 17.0 — fixed in 17.0
Apple macOS: before 14.0 — fixed in 14.0

How to fix

Upgrade to a fixed version: Apple iPadOS 17.0; Apple Iphone Os 17.0; Apple macOS 14.0. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/HT213938
https://support.apple.com/en-us/HT213940
https://support.apple.com/en-us/HT213938
https://support.apple.com/en-us/HT213940
https://support.apple.com/kb/HT213938
https://support.apple.com/kb/HT213940

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