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CVE-2021-1876 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://support.apple.com/en-us/HT212325	CVE	Vendor Advisory
https://support.apple.com/en-us/HT212326	CVE	Vendor Advisory
https://support.apple.com/en-us/HT212327	CVE	Vendor Advisory
https://support.apple.com/en-us/HT212325	[email protected]	Vendor Advisory
https://support.apple.com/en-us/HT212326	[email protected]	Vendor Advisory
https://support.apple.com/en-us/HT212327	[email protected]	Vendor Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]

Affected Products

Product	Versions
apple mac os x	>= 10.14, <= 10.14.5 >= 10.15, <= 10.15.5 10.14.6 - 10.14.6 security_update_2019-001 10.14.6 security_update_2019-002
CPE cpe:2.3:o:apple:mac_os_x:::::::: cpe:2.3:o:apple:mac_os_x:10.14.6:-:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-001:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:::::: cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:::::: cpe:2.3:o:apple:mac_os_x:10.15.6:-:::::: cpe:2.3:o:apple:mac_os_x:10.15.6:supplemental_update:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:-:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:::::: cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:::::: Remediation No remediation found in references.
apple macos	>= 11.0, < 11.3
CPE cpe:2.3:o:apple:macos:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Sep 20, 2021	Initial Analysis	[email protected]