CVE-2020-3860

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-02-27 · updated 2026-06-17
Weakness: CWE-20

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, watchOS 6.1.2. An application may be able to execute arbitrary code with kernel privileges.

Affected products

Apple iPadOS: before 13.3.1 — fixed in 13.3.1
Apple Iphone Os: before 13.3.1 — fixed in 13.3.1
Apple watchOS: before 6.1.2 — fixed in 6.1.2

How to fix

Upgrade to a fixed version: Apple iPadOS 13.3.1; Apple Iphone Os 13.3.1; Apple watchOS 6.1.2. Check the vendor advisory for mitigations.

References

https://support.apple.com/HT210918
https://support.apple.com/HT210921
https://support.apple.com/HT210918
https://support.apple.com/HT210921

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