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5.5
MEDIUM CVSS 3.1
CVE-2021-30892
Apple macOS Protected File System Permissions Vulnerability
Description

An inherited permissions issue was addressed with additional restrictions. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to modify protected parts of the file system.

INFO

Published Date :

Aug. 24, 2021, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 6:04 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2021-30892 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apple macos
2 Apple mac_os_x
: Total Affected Vendor : 1 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
An inherited permissions issue was addressed with additional restrictions; upgrade to a patched version.
  • Upgrade to macOS Monterey 12.0.1 or later.
  • Upgrade to macOS Big Sur 11.6.1 or later.
  • Upgrade to macOS Catalina Security Update 2021-007 or later.
Public PoC/Exploit Available at Github

CVE-2021-30892 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-30892.

URL Resource
https://support.apple.com/en-us/HT212869
https://support.apple.com/en-us/HT212871
https://support.apple.com/en-us/HT212872
https://support.apple.com/en-us/HT212869
https://support.apple.com/en-us/HT212871
https://support.apple.com/en-us/HT212872
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-30892 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-30892 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
yo-yo-yo-jbo/yo-yo-yo-jbo.github.io

None

Updated: 7 months ago
0 stars 1 fork 1 watcher
Born at : April 4, 2023, 5:52 p.m. This repo has been linked 21 different CVEs too.
Profile Photo
houjingyi233/macOS-iOS-system-security

Here is some resources about macOS/iOS system security.

Updated: 1 month, 2 weeks ago
519 stars 55 fork 55 watcher
Born at : Aug. 26, 2020, 8:21 a.m. This repo has been linked 167 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-30892 vulnerability anywhere in the article.

  • BleepingComputer
Microsoft: macOS Sploitlight flaw leaks Apple Intelligence data

Attackers could use a recently patched macOS vulnerability to bypass Transparency, Consent, and Control (TCC) security checks and steal sensitive user information, including Apple Intelligence cached ... Read more

Published Date: Jul 28, 2025 (1 month ago)
  • The Hacker News
Microsoft Uncovers macOS Vulnerability CVE-2024-44243 Allowing Rootkit Installation

Endpoint Security / Vulnerability Microsoft has shed light on a now-patched security flaw impacting Apple macOS that, if successfully exploited, could have allowed an attacker running as "root" to byp ... Read more

Published Date: Jan 14, 2025 (7 months, 2 weeks ago)
  • BleepingComputer
Microsoft: macOS bug lets hackers install malicious kernel drivers

Apple recently addressed a macOS vulnerability that allows attackers to bypass System Integrity Protection (SIP) and install malicious kernel drivers by loading third-party kernel extensions. System I ... Read more

Published Date: Jan 13, 2025 (7 months, 3 weeks ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-30892 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://support.apple.com/en-us/HT212869
    Added Reference https://support.apple.com/en-us/HT212871
    Added Reference https://support.apple.com/en-us/HT212872
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Source Update by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source MITRE Apple Inc.
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212869 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212871 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212872 [No types assigned]
    Removed Reference MITRE https://support.apple.com/en-us/HT212869
    Removed Reference MITRE https://support.apple.com/en-us/HT212871
    Removed Reference MITRE https://support.apple.com/en-us/HT212872
  • Initial Analysis by [email protected]

    Nov. 02, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
    Changed Reference Type https://support.apple.com/en-us/HT212869 No Types Assigned https://support.apple.com/en-us/HT212869 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT212871 No Types Assigned https://support.apple.com/en-us/HT212871 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT212872 No Types Assigned https://support.apple.com/en-us/HT212872 Vendor Advisory
    Added CWE NIST CWE-732
    Added CPE Configuration OR *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.15.7 *cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* *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: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:security_update_2021-006:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.6.1 *cpe:2.3:o:apple:macos:12.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 28, 2021

    Action Type Old Value New Value
    Changed Description ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by the CVE program. Notes: none. An inherited permissions issue was addressed with additional restrictions. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to modify protected parts of the file system.
    Added Reference https://support.apple.com/en-us/HT212869 [No Types Assigned]
    Added Reference https://support.apple.com/en-us/HT212871 [No Types Assigned]
    Added Reference https://support.apple.com/en-us/HT212872 [No Types Assigned]
  • CVE Unrejected by [email protected]

    Oct. 28, 2021

    Action Type Old Value New Value
  • CVE Rejected by [email protected]

    Aug. 24, 2021

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 4.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.57 }} -0.14%

score

0.80765

percentile