CVE-2019-6203

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-04-17 · updated 2026-06-17

Description

A logic issue was addressed with improved state management. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, tvOS 12.2. An attacker in a privileged network position may be able to intercept network traffic.

Affected products

Apple Iphone Os: before 12.2 — fixed in 12.2
macOS: before 10.14.4 — fixed in 10.14.4
Apple tvOS: before 12.2 — fixed in 12.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.2; macOS 10.14.4; Apple tvOS 12.2. Check the vendor advisory for mitigations.

References

https://support.apple.com/HT209599
https://support.apple.com/HT209600
https://support.apple.com/HT209601
https://support.apple.com/HT209599
https://support.apple.com/HT209600
https://support.apple.com/HT209601

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