CVE-2020-27906: Apple macOS

High severity, CVSS 8.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Multiple integer overflows were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1. A remote attacker may be able to cause unexpected application termination or heap corruption.

Affected products

• Apple macOS: before 11.0.1 (fixed in 11.0.1)

Published 2020-12-08. Last modified 2026-06-17.