What’s Vulnerable › Vulnerabilities

CVE-2018-4339

• Severity: medium (CVSS 5.5 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: 2020-10-27 · updated 2026-06-17

Description

This issue was addressed with a new entitlement. This issue is fixed in iOS 12.1. A local user may be able to read a persistent device identifier.

Affected products

• Apple Iphone Os: before 12.1 — fixed in 12.1

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT209192
• https://support.apple.com/en-us/HT209192

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