CVE-2023-42855

Severity: medium (CVSS 4.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-21 · updated 2026-06-17

Description

This issue was addressed with improved state management. This issue is fixed in iOS 17.1 and iPadOS 17.1. An attacker with physical access may be able to silently persist an Apple ID on an erased device.

Affected products

Apple Ipad Os: before 17.1 — fixed in 17.1
Apple Iphone Os: before 17.1 — fixed in 17.1

How to fix

Upgrade to a fixed version: Apple Ipad Os 17.1; Apple Iphone Os 17.1. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/HT213982
https://support.apple.com/en-us/HT213982
https://support.apple.com/kb/HT213982

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