CVE-2021-30807

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-30807
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://support.apple.com/en-us/HT212622 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212623 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212713 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212622 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212623 Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212713 Release Notes Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807 Third Party Advisory 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:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
History

23 Oct 2025, 18:02

Type Values Removed Values Added
References () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807 - () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807 - Third Party Advisory, 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-2021-30807 -

21 Oct 2025, 20:18

Type Values Removed Values Added
References
  • {'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807', 'source': '134c704f-9b21-4f2e-91b3-4a467353bcc0'}

21 Oct 2025, 19:19

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807 -

28 Feb 2025, 14:44

Type Values Removed Values Added
CPE cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
First Time Apple ipados

21 Nov 2024, 06:04

Type Values Removed Values Added
References () https://support.apple.com/en-us/HT212622 - Release Notes, Vendor Advisory () https://support.apple.com/en-us/HT212622 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/HT212623 - Release Notes, Vendor Advisory () https://support.apple.com/en-us/HT212623 - Release Notes, Vendor Advisory
References () https://support.apple.com/en-us/HT212713 - Release Notes, Vendor Advisory () https://support.apple.com/en-us/HT212713 - Release Notes, Vendor Advisory

08 Aug 2023, 14:21

Type Values Removed Values Added
CWE NVD-CWE-noinfo CWE-787
Information

Published : 2021-10-19 14:15

Updated : 2025-10-23 18:02

NVD link : CVE-2021-30807

Mitre link : CVE-2021-30807

CVE.ORG link : CVE-2021-30807

JSON object : View

Products Affected

apple

  • iphone_os
  • watchos
  • ipados
  • macos
CWE
CWE-787

Out-of-bounds Write