CVE-2021-1876 Information

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.3 Security Update 2021-002 Catalina Security Update 2021-003 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS Vector

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

Reference

https://support.apple.com/en-us/HT212327 https://support.apple.com/en-us/HT212325 https://support.apple.com/en-us/HT212326

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8