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CVE-2021-1870

Published: 4/2/2021 Last updated: 10/21/2025 Reserved: 12/8/2020

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

CNA assigner: apple (286789f9-fbc2-4510-9f9a-43facdede74c) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 9.8 Critical CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Opam packages affected (1)

javascriptcore

Products affected (3)

Product Vendor Version
macOS Apple 6.4.0.17
iOS and iPadOS Apple n/a
macOS Apple < 12.3X48-D35

References (21)