medium
5.5
Advisory Published
CVE Published
Updated

CVE-2021-1781

First published: Tue Jan 26 2021(Updated: )

A privacy issue existed in the handling of Contact cards. This was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A malicious application may be able to leak sensitive user information.

Credit: Csaba Fitzl @theevilbit Offensive Security product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple macOS<11.2
11.2
macOS Catalina
macOS Mojave
Apple iOS, iPadOS, and watchOS<14.4
iOS<14.4
Apple iOS and macOS>=10.14<10.14.6
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-supplemental_update
Apple iOS and macOS>=11.0<11.2
Apple iOS, iPadOS, and watchOS<14.4
14.4
Apple iOS, iPadOS, and watchOS<14.4
14.4

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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 the vulnerability severity of CVE-2021-1781?

    The severity of CVE-2021-1781 is not specified in the provided information.

  • How does CVE-2021-1781 affect macOS Big Sur 11.2?

    CVE-2021-1781 affects macOS Big Sur 11.2.

  • What software versions are affected by CVE-2021-1781?

    macOS Big Sur 11.2 and iOS 14.4 are affected by CVE-2021-1781.

  • How can I fix CVE-2021-1781?

    To fix CVE-2021-1781, update to the latest version of macOS or iOS provided by Apple.

  • Where can I find more information about CVE-2021-1781?

    You can find more information about CVE-2021-1781 on the Apple support website at the following links: [link1](https://support.apple.com/en-us/HT212147) and [link2](https://support.apple.com/en-us/HT212146).

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