VULNERABILITY INTELLIGENCE

CVE-2021-1870

CVSS score9.8 CRITICAL
EPSS probability7.71%
CISA KEVKnown exploited vulnerability
Published2021-04-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability

Vendor / product: Apple / iOS, iPadOS, and macOS

Description

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..

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references