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CVE-2021-30869

HIGH · CVSS 7.8 · Analyzed

Published: 2021-08-24 · Updated: 2026-06-17 · Source: NVD

Vulnerability overview

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

Severity and scoring

CVSS score
7.8 · HIGH
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-843

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
Apple · iOS, iPadOS, and macOS
Added to catalog
2021-11-03
Required action
Apply updates per vendor instructions.
CISA remediation due date
2021-11-17

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*

    Before (exclusive): 14.4

  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

    From (inclusive): 12.0

    Before (exclusive): 12.5.5

  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

    From (inclusive): 14.0

    Before (exclusive): 14.4

  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

    From (inclusive): 10.14

    Through (inclusive): 10.14.6

  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

    From (inclusive): 10.15

    Through (inclusive): 10.15.6

  • 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:10.15.7:-:*:*:*:*:*:*

  • 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_2021-002:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*

  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

    From (inclusive): 11.0

    Before (exclusive): 11.2

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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