PT-2021-13561
CVE-2021-1771
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Published
2021-02-01
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Updated
2021-04-12
Description by
CVSS 2.0
4.3
MediumMetricsAV:N/AC:M/Au:N/C:N/I:P/A:N
Name of the Vulnerable Software and Affected Versions:
macOS versions prior to 11.2
Security Update versions prior to 2021-001 Catalina
Security Update versions prior to 2021-001 Mojave
Description:
A user that is removed from an iMessage group could rejoin the group. This issue was addressed with improved checks.
Recommendations:
For macOS versions prior to 11.2, update to macOS Big Sur 11.2.
For Security Update versions prior to 2021-001 Catalina, apply Security Update 2021-001 Catalina.
For Security Update versions prior to 2021-001 Mojave, apply Security Update 2021-001 Mojave.
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