What is CVE-2020-3866?

CVE-2020-3866 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.5/10. Published 2020-02-27.

How severe is CVE-2020-3866?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Apple macOS

CVE-2020-3866

This was addressed with additional checks by Gatekeeper on files mounted through a network share. This issue is fixed in macOS Catalina 10.15.3. Searching for and opening a file from an attacker controlled NFS mount may bypass Gatekeeper.

EPSS: 0.007 (48.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Apple Macos — versions unspecified
Apple Mac_os_x

References

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

Frequently asked questions

What is CVE-2020-3866?: CVE-2020-3866 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.5/10. Published 2020-02-27.
How severe is CVE-2020-3866?: Medium severity. CVSS v3 base score is 5.5 out of 10.