critical
9.3
CWE
787
Advisory Published
CVE Published
Updated

CVE-2021-1841

First published: Mon Apr 26 2021(Updated: )

A malicious application may be able to execute arbitrary code with kernel privileges. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. An out-of-bounds write issue was addressed with improved bounds checking.

Credit: Jack Dates RET2 Systems Inc product-security@apple.com Jack Dates RET2 Systems IncABC Research s.r.o. Trend Micro Zero Day Initiative

Affected SoftwareAffected VersionHow to fix
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple Mac OS X=10.14
Apple Mac OS X=10.14.0
Apple Mac OS X=10.14.1
Apple Mac OS X=10.14.2
Apple Mac OS X=10.14.3
Apple Mac OS X=10.14.4
Apple Mac OS X=10.14.4-beta4
Apple Mac OS X=10.14.5
Apple Mac OS X=10.14.6
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=10.15
Apple Mac OS X=10.15.1
Apple Mac OS X=10.15.2
Apple Mac OS X=10.15.3
Apple Mac OS X=10.15.4
Apple Mac OS X=10.15.5
Apple Mac OS X=10.15.6
Apple Mac OS X=10.15.6
Apple Mac OS X=10.15.6-supplemental_update
Apple Mac OS X=10.15.7
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 macOS>=11.0<11.3

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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-2021-1841?

    CVE-2021-1841 is a vulnerability in the Intel Graphics Driver that allows a malicious application to execute arbitrary code with kernel privileges.

  • Who is affected by CVE-2021-1841?

    Users of Apple Catalina and Apple macOS Big Sur versions up to 11.3 are affected by CVE-2021-1841.

  • How can I fix CVE-2021-1841?

    To fix CVE-2021-1841, update your operating system to a version that is higher than or equal to 11.3 for Apple macOS Big Sur, or apply the necessary updates provided by Apple for Apple Catalina.

  • What is the severity of CVE-2021-1841?

    The severity of CVE-2021-1841 is high.

  • Where can I find more information about CVE-2021-1841?

    You can find more information about CVE-2021-1841 on the official Apple support page: https://support.apple.com/en-us/HT212326 and https://support.apple.com/en-us/HT212325

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