medium
6.5
Advisory Published
CVE Published
Updated

CVE-2021-30721

First published: Mon May 24 2021(Updated: )

A path handling issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. An attacker in a privileged network position may be able to leak sensitive user information.

Credit: Aleksandar Nikolic Cisco TalosAleksandar Nikolic Cisco Talos product-security@apple.com Aleksandar Nikolic Cisco Talos

Affected SoftwareAffected VersionHow to fix
Apple macOS<11.4
11.4
macOS Catalina
macOS Mojave
Apple iOS and macOS>=10.14.0<=10.14.5
Apple iOS and macOS>=10.15<=10.15.6
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
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-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.14.6-security_update_2021-003
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-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-supplemental_update
Apple iOS and 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-2021-30721?

    CVE-2021-30721 is a vulnerability in smb and it is a path handling issue that was addressed with improved validation.

  • What is the severity of CVE-2021-30721?

    The severity of CVE-2021-30721 is not mentioned in the available information.

  • How does CVE-2021-30721 affect macOS Big Sur?

    CVE-2021-30721 affects macOS Big Sur version 11.4.

  • How does CVE-2021-30721 affect macOS Mojave?

    There is no specific mention of how CVE-2021-30721 affects macOS Mojave in the available information.

  • How does CVE-2021-30721 affect macOS Catalina?

    There is no specific mention of how CVE-2021-30721 affects macOS Catalina in the available information.

  • How can I fix CVE-2021-30721?

    To fix CVE-2021-30721, update your macOS Big Sur to version 11.4.

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