high
7.8
CWE
787
Advisory Published
CVE Published
Updated

CVE-2021-30739

First published: Mon May 24 2021(Updated: )

A local attacker may be able to elevate their privileges. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. A memory corruption issue was addressed with improved validation.

Credit: Zuozhi Fan @pattern_F_ Ant Group Tianqiong Security LabZuozhi Fan @pattern_F_ Ant Group Tianqiong Security Lab product-security@apple.com Zuozhi Fan @pattern_F_ Ant Group Tianqiong Security Lab

Affected SoftwareAffected VersionHow to fix
Apple macOS Big Sur<11.4
11.4
Apple Mojave
Apple Catalina
Apple Mac OS X>=10.14.0<=10.14.5
Apple Mac OS X>=10.15<=10.15.6
Apple Mac OS X=10.14.6
Apple Mac OS X=10.14.6-security_update_2019-001
Apple Mac OS X=10.14.6-security_update_2019-002
Apple Mac OS X=10.14.6-security_update_2019-004
Apple Mac OS X=10.14.6-security_update_2019-005
Apple Mac OS X=10.14.6-security_update_2019-006
Apple Mac OS X=10.14.6-security_update_2019-007
Apple Mac OS X=10.14.6-security_update_2020-001
Apple Mac OS X=10.14.6-security_update_2020-002
Apple Mac OS X=10.14.6-security_update_2020-003
Apple Mac OS X=10.14.6-security_update_2020-004
Apple Mac OS X=10.14.6-security_update_2020-005
Apple Mac OS X=10.14.6-security_update_2020-006
Apple Mac OS X=10.14.6-security_update_2020-007
Apple Mac OS X=10.14.6-security_update_2021-001
Apple Mac OS X=10.14.6-security_update_2021-002
Apple Mac OS X=10.14.6-security_update_2021-003
Apple Mac OS X=10.14.6-supplemental_update
Apple Mac OS X=10.14.6-supplemental_update_2
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2020-005
Apple Mac OS X=10.15.7-security_update_2020-007
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0.1<11.4

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2021-30739?

    CVE-2021-30739 is a vulnerability in the Kernel that allows a local attacker to potentially elevate their privileges.

  • How does CVE-2021-30739 affect macOS Big Sur 11.4?

    macOS Big Sur 11.4 is affected by CVE-2021-30739. Users of this operating system version should be aware of this vulnerability.

  • What is the severity of CVE-2021-30739?

    The severity of CVE-2021-30739 is not specified in the provided information.

  • How can I fix CVE-2021-30739?

    To fix CVE-2021-30739, users should update their macOS to the latest version available and follow the recommendations provided by Apple.

  • Where can I find more information about CVE-2021-30739?

    More information about CVE-2021-30739 can be found on the following Apple support articles: [link 1], [link 2], [link 3].

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