CVE-2021-1821 Information

Description

A logic issue was addressed with improved state management. This issue is fixed in watchOS 7.6 macOS Big Sur 11.5. Visiting a maliciously crafted webpage may lead to a system denial of service.

CVSS Vector

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

Reference

https://support.apple.com/en-us/HT212605 https://support.apple.com/en-us/HT212602

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5