What is CVE-2021-1771?

CVE-2021-1771 is a low-severity vulnerability in Apple macOS. CVSS score: 3.3/10. Published 2021-04-02.

How severe is CVE-2021-1771?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Apple macOS

CVE-2021-1771

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. A user that is removed from an iMessage group could rejoin the group.

EPSS: 0.005 (42.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Apple Macos — versions unspecified
Apple Mac_os_x — versions 10.14.6, 10.15.7

References

product-security@apple.com (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1771?: CVE-2021-1771 is a low-severity vulnerability in Apple macOS. CVSS score: 3.3/10. Published 2021-04-02.
How severe is CVE-2021-1771?: Low severity. CVSS v3 base score is 3.3 out of 10.