CVE-2019-8659: Apple watchOS

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

This issue was addressed with improved checks. This issue is fixed in watchOS 5.3. Users removed from an iMessage conversation may still be able to alter state.

Affected products

• Apple watchOS: before 5.3 (fixed in 5.3)

Published 2019-12-18. Last modified 2026-06-17.