CVE-2020-9966

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0. An application may be able to execute arbitrary code with kernel privileges.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-125

Affected software

VendorProductVersions
AppletvOS>= unspecified, < 14.0
ApplewatchOS>= unspecified, < 7.0
AppleiOS and iPadOS>= unspecified, < 14.0
ApplemacOS>= unspecified, < 11.0

References

Timeline

Published
Dec 8, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-99677.8Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macCVE-2020-99685.5A logic issue was addressed with improved restrictions. This issue is fixed in iOS 14.0 and iPadOS 14.0, macOS Catalina 10.15.7, tvOS 14.0, CVE-2020-99695.5An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOSCVE-2020-99717.8A logic issue was addressed with improved validation. This issue is fixed in watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0, macOS Big SurCVE-2020-99727.8A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 14.0 and iPadOS 14.0. Processing a maliciousCVE-2020-99737.8An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Catalina 10.15.7, Security Update 2020-005 HCVE-2020-99745.5A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.2 and iPadOS 14.2, tvOS 14.2CVE-2020-99757.8A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur CVE-2020-99765.5A logic issue was addressed with improved state management. This issue is fixed in iOS 14.0 and iPadOS 14.0, tvOS 14.0, watchOS 7.0. A malicCVE-2020-99775.5A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. ThCVE-2020-99784.5This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, SecuCVE-2020-99795.5A trust issue was addressed by removing a legacy API. This issue is fixed in iOS 14.0 and iPadOS 14.0, tvOS 14.0. An attacker may be able to