CVE-2020-9977

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A malicious application may be able to determine a user's open tabs in Safari.

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-20

Affected software

VendorProductVersions
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-2020-99784.5This 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 toCVE-2020-99807.8An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10CVE-2020-99817.8A 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-2020-99825.5This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in Apple Music 3.4.0 for Android. A malicCVE-2020-99838.8An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 14.0. Processing maliciously craftedCVE-2020-99847.8An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6,CVE-2020-99857.8A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6CVE-2020-99863.3A file access issue existed with certain home folder files. This was addressed with improved access restrictions. This issue is fixed in macCVE-2020-99874.3An inconsistent user interface issue was addressed with improved state management. This issue is fixed in Safari 14.0. Visiting a malicious CVE-2020-99885.5The issue was addressed with improved deletion. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A local user may be aCVE-2020-99895.5The issue was addressed with improved deletion. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0. A local
CVE-2020-9977: Medium severity, CVSS 5.5 | Vulnix