CVE-2020-9943

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0. A malicious application may be able to read restricted memory.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

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

Related CVEs from 2020

CVE-2020-99445.5An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS CVE-2020-99454.3A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation. This issue is fixed in macOS Big CVE-2020-99466.8This issue was addressed with improved checks. This issue is fixed in iOS 14.0 and iPadOS 14.0, watchOS 7.0. The screen lock may not engage CVE-2020-99478.8A use after free issue was addressed with improved memory management. This issue is fixed in watchOS 7.0, iOS 14.0 and iPadOS 14.0, iTunes fCVE-2020-99488.8A type confusion issue was addressed with improved memory handling. This issue is fixed in Safari 14.0. Processing maliciously crafted web cCVE-2020-99497.8A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 andCVE-2020-99508.8A use after free issue was addressed with improved memory management. This issue is fixed in watchOS 7.0, tvOS 14.0, Safari 14.0, iOS 14.0 aCVE-2020-99518.8A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0. Processing maliciously crafted webCVE-2020-99527.1An input validation issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0, tvOS 14.0, watchOS CVE-2020-99547.8A buffer overflow issue was addressed with improved memory handling. This issue is fixed in watchOS 7.0, tvOS 14.0, macOS Catalina 10.15.7, CVE-2020-99557.8An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOSCVE-2020-99567.8An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11
CVE-2020-9943: Medium severity, CVSS 5.5 | Vulnix