AUGUST 4, 2026
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Case File

CVE-2020-9977

MEDIUM · CVSS 5.5 EPSS 0.91%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-12-08 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. See the original NVD description below for full technical details.

CVE
CVE-2020-9977
Severity
MEDIUM
CVSS
5.5
EPSS
0.91%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)