CVE-2021-1818

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
AppleiOS and iPadOS>= unspecified, < 14.4
ApplemacOS>= unspecified, < 11.2
ApplemacOS>= unspecified, < 7.3
ApplemacOS>= unspecified, < 7.3
ApplemacOS>= unspecified, < 14.4
ApplemacOS>= unspecified, < 14.4

References

Timeline

Published
Apr 2, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-1818: Critical severity, CVSS 9.8 | Vulnix