CVE-2020-9771

Name: CVE-2020-9771
Creator: NVD / NIST
Published: 2020-10-22T18:15:13.207+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2020-9771 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. This issue was addressed with a new entitlement. This issue is fixed in macOS Catalina 10.15.4. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

This issue was addressed with a new entitlement. This issue is fixed in macOS Catalina 10.15.4. A user may gain access to protected parts of the file system.

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.34%

25.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	< 10.15.4

References

https://support.apple.com/kb/HT211100Vendor Advisory
https://support.apple.com/kb/HT211100Vendor Advisory

Timeline

Published: Oct 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9771?

This issue was addressed with a new entitlement. This issue is fixed in macOS Catalina 10.15.4. A user may gain access to protected parts of the file system.

How severe is CVE-2020-9771?

CVE-2020-9771 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9771?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9771?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST