CVE-2019-8750: Apple iCloud

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in watchOS 6.1, iCloud for Windows 11.0. Multiple issues in libxslt.

Affected products

• Apple iCloud: before 10.8 (fixed in 10.8)
• Apple watchOS: before 6.1 (fixed in 6.1)

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