VULNERABILITY INTELLIGENCE

CVE-2020-9977

CVSS score5.5 MEDIUM

EPSS probability0.93%

CISA KEVNot currently listed

Published2020-12-08

Last modified2026-06-17

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

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.

Weakness classification

CWE-20: Improper Input Validation

Primary references

product-security@apple.com — Mailing List, Third Party Advisory
product-security@apple.com — Vendor Advisory
product-security@apple.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory