Is CVE-2023-42855 in the CISA KEV catalog?

No. CVE-2023-42855 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-42855?

CVE-2023-42855 has a CVSS v3 base score of 4.6 (MEDIUM).

What is the EPSS score for CVE-2023-42855?

CVE-2023-42855 has an EPSS score of 0.23% (14th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-42855?

Upgrade ipad os to 17.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-42855

MEDIUM

4.6

CVSS v3

NVD

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.

How to fix

Remediation Available

ipad osNVD

Affected:< 17.1Fixed in:17.1CVE-2023-42855derived from NVD

iphone osNVD

Affected:< 17.1Fixed in:17.1CVE-2023-42855derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Vendor Advisory1

support.apple.com

Other references1

support.apple.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.