CVE-2020-3840: Apple iPadOS

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

An off by one issue existed in the handling of racoon configuration files. This issue was addressed through improved bounds checking. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1. Loading a maliciously crafted racoon configuration file may lead to arbitrary code execution.

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 Mac OS X: before 10.15.3 (fixed in 10.15.3)
• Apple tvOS: before 13.3.1 (fixed in 13.3.1)

Published 2020-02-27. Last modified 2026-06-17.