What is CVE-2020-9786?

CVE-2020-9786 is a low-severity vulnerability in Apple macOS. CVSS score: 3.3/10. Published 2020-10-27.

How severe is CVE-2020-9786?

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

Vulnerability in Apple macOS

CVE-2020-9786

This issue was addressed with improved checks This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra. An application may be able to trigger a sysdiagnose.

Published 2020-10-27 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.006 (45.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Apple macOS — versions unspecified
Apple Mac OS X

References

support.apple.com/en-us/HT211100 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-9786?: CVE-2020-9786 is a low-severity vulnerability in Apple macOS. CVSS score: 3.3/10. Published 2020-10-27.
How severe is CVE-2020-9786?: Low severity. CVSS v3 base score is 3.3 out of 10.