What is CVE-2023-42855?

CVE-2023-42855 is a medium-severity vulnerability in Apple iOS And Ipados. CVSS score: 4.6/10. Published 2024-02-21.

How severe is CVE-2023-42855?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Vulnerability in Apple iOS And Ipados

CVE-2023-42855

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.

Published 2024-02-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (12.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipad OS
Apple Iphone OS

References

support.apple.com/en-us/HT213982 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-42855?: CVE-2023-42855 is a medium-severity vulnerability in Apple iOS And Ipados. CVSS score: 4.6/10. Published 2024-02-21.
How severe is CVE-2023-42855?: Medium severity. CVSS v3 base score is 4.6 out of 10.