What is CVE-2020-9774?

CVE-2020-9774 is a high-severity vulnerability in Apple macOS, classified under Missing Encryption of Sensitive Data. CVSS score: 7.5/10. Published 2020-10-27.

How severe is CVE-2020-9774?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apple macOS

CVE-2020-9774

An issue existed with Siri Suggestions access to encrypted data. The issue was fixed by limiting access to encrypted data. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. Encrypted data may be inappropriately accessed.

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

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% 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

Weakness classification (CWE)

CWE-311 — Missing Encryption of Sensitive Data

References

support.apple.com/en-us/HT210919 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-9774?: CVE-2020-9774 is a high-severity vulnerability in Apple macOS, classified under Missing Encryption of Sensitive Data. CVSS score: 7.5/10. Published 2020-10-27.
How severe is CVE-2020-9774?: High severity. CVSS v3 base score is 7.5 out of 10.