medium
5.5
CWE
787
Advisory Published
CVE Published
Updated

CVE-2021-1883

First published: Mon Apr 26 2021(Updated: )

Heimdal. This issue was addressed with improved checks.

Credit: Gabe Kirkpatrick @gabe_k Gabe Kirkpatrick @gabe_k Gabe Kirkpatrick @gabe_k Gabe Kirkpatrick @gabe_k Gabe Kirkpatrick @gabe_k Gabe Kirkpatrick @gabe_k product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS<14.5
14.5
Apple iPadOS<14.5
14.5
Apple tvOS<14.5
14.5
<7.4
7.4
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple Mojave
Apple iPadOS<14.5
Apple iPhone OS<14.5
Apple Mac OS X>=10.14<=10.14.5
Apple Mac OS X>=10.15<=10.15.5
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=10.15.6
Apple Mac OS X=10.15.6-supplemental_update
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<11.3
Apple tvOS<14.5
Apple watchOS<7.4

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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-2021-1883?

    CVE-2021-1883 is a vulnerability in Heimdal that has been addressed with improved checks.

  • Which software versions are affected by CVE-2021-1883?

    CVE-2021-1883 affects Apple iOS up to exclusive version 14.5, Apple iPadOS up to exclusive version 14.5, Apple watchOS up to exclusive version 7.4, Apple macOS Big Sur up to exclusive version 11.3, Apple Catalina, Apple tvOS up to exclusive version 14.5, and Apple Mojave.

  • How can I fix CVE-2021-1883?

    To fix CVE-2021-1883, update your Apple devices to the recommended software versions: iOS 14.5, iPadOS 14.5, watchOS 7.4, macOS Big Sur 11.3, tvOS 14.5.

  • Where can I find more information about CVE-2021-1883?

    You can find more information about CVE-2021-1883 on the Apple support page: [link](https://support.apple.com/en-us/HT212530).

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