What’s Vulnerable › Vulnerabilities

CVE-2019-8631

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, iOS 12.3, tvOS 12.3. Users removed from an iMessage conversation may still be able to alter state.

Affected products

• Apple Iphone Os: before 12.3 — fixed in 12.3
• macOS: before 10.14.5 — fixed in 10.14.5
• Apple tvOS: before 12.3 — fixed in 12.3

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.3; macOS 10.14.5; Apple tvOS 12.3. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT210118
• https://support.apple.com/en-us/HT210119
• https://support.apple.com/en-us/HT210120
• https://support.apple.com/en-us/HT210118
• https://support.apple.com/en-us/HT210119
• https://support.apple.com/en-us/HT210120

Get alerted when CVE-2019-8631 or the next vulnerability affects your stack