CVE-2021-1871

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-1871
A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ Mailing List Broken Link
https://support.apple.com/en-us/HT212146 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212147 Release Notes Vendor Advisory
https://www.debian.org/security/2021/dsa-4923 Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ Mailing List Broken Link
https://support.apple.com/en-us/HT212146 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212147 Release Notes Vendor Advisory
https://www.debian.org/security/2021/dsa-4923 Mailing List Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871 US Government Resource
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
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:supplemental_update:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
History

23 Oct 2025, 18:01

Type Values Removed Values Added
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Mailing List () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Mailing List, Broken Link
References () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871 - () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871 - US Government Resource

22 Oct 2025, 00:17

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871 -

21 Oct 2025, 20:18

Type Values Removed Values Added
References
  • {'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871', 'source': '134c704f-9b21-4f2e-91b3-4a467353bcc0'}

21 Oct 2025, 19:18

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871 -
References () https://support.apple.com/en-us/HT212146 - Vendor Advisory, Release Notes () https://support.apple.com/en-us/HT212146 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/HT212147 - Vendor Advisory, Release Notes () https://support.apple.com/en-us/HT212147 - Release Notes, Vendor Advisory

28 Feb 2025, 14:44

Type Values Removed Values Added
CPE cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Release Notes () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Mailing List
References () https://support.apple.com/en-us/HT212146 - Vendor Advisory () https://support.apple.com/en-us/HT212146 - Vendor Advisory, Release Notes
References () https://support.apple.com/en-us/HT212147 - Vendor Advisory () https://support.apple.com/en-us/HT212147 - Vendor Advisory, Release Notes
First Time Apple ipados

21 Nov 2024, 05:45

Type Values Removed Values Added
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Release Notes () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Release Notes
References () https://support.apple.com/en-us/HT212146 - Vendor Advisory () https://support.apple.com/en-us/HT212146 - Vendor Advisory
References () https://support.apple.com/en-us/HT212147 - Vendor Advisory () https://support.apple.com/en-us/HT212147 - Vendor Advisory
References () https://www.debian.org/security/2021/dsa-4923 - Mailing List, Third Party Advisory () https://www.debian.org/security/2021/dsa-4923 - Mailing List, Third Party Advisory

26 Jul 2024, 20:01

Type Values Removed Values Added
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ - Release Notes
References () https://www.debian.org/security/2021/dsa-4923 - Third Party Advisory () https://www.debian.org/security/2021/dsa-4923 - Mailing List, Third Party Advisory

26 Apr 2022, 17:26

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References (DEBIAN) https://www.debian.org/security/2021/dsa-4923 - (DEBIAN) https://www.debian.org/security/2021/dsa-4923 - Third Party Advisory

31 May 2021, 00:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2021/dsa-4923 -
Information

Published : 2021-04-02 19:15

Updated : 2025-10-23 18:01

NVD link : CVE-2021-1871

Mitre link : CVE-2021-1871

CVE.ORG link : CVE-2021-1871

JSON object : View

Products Affected

apple

  • mac_os_x
  • ipados
  • macos
  • iphone_os

debian

  • debian_linux

fedoraproject

  • fedora
CWE
NVD-CWE-noinfo