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CVE-2021-30909

HIGH
7.8
CVSS Score
Published: August 24, 2021 at 06:50 PM UTC
Updated: June 17, 2026 at 03:51 AM UTC
5 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity
HIGH7.8
Exploit prediction
EPSS 1%

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
95%
v < 14.8v < 14.8.1v < 15.115.0
Affected range stops below 14.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.8.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1, so it looks safe — our inference, not a vendor statement
iPhone OS· Apple
95%
v < 14.8.115.0
Affected range stops below 14.8.1, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 10.15.7v < 11.6v < 12.0v < 15.1v < 2021v < 8.111.0 ≤ v < 11.6.110.15.710.15.7 security_update_2020-110.15.7 security_update_2021-110.15.7 security_update_2021-210.15.7 security_update_2021-310.15.7 security_update_2021-410.15.7 security_update_2021-510.15.7 security_update_2021-610.15.7 supplemental_update12.0
Affected range stops below 10.15.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.6.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 2021, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.1, so it looks safe — our inference, not a vendor statement
tvOS· Apple
95%
v < 15.1
Affected range stops below 15.1, so it looks safe — our inference, not a vendor statement
watchOS· Apple
95%
v < 8.1
Affected range stops below 8.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (7)

x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212867
x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212868
x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212869
x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212871
x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212872
x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212874
x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212876

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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