CVE-2021-1876: 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…

PriorityP348high8.8CVSS 3.1

AVNACLPRNUIRSUCHIHAH

EPSS

1.26%

66.5th percentile

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.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
apple	mac_os_x	—	—
apple	mac_os_x	—	—
apple	mac_os_x	—	—
apple	mac_os_x	10.14 – 10.14.5	—
apple	mac_os_x	10.15 – 10.15.5	—
apple	macos	>= 11.0 < 11.3	11.3
apple	macos	>= unspecified < 11.3	11.3
apple	macos	>= unspecified < 2021	2021
apple	macos_big_sur	—	—
apple	security_update_2021-002_catalina	—	—

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

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