CVE-2019-8817

Name: CVE-2019-8817
Creator: NVD / NIST
Published: 2019-12-18T18:15:44.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2019-8817 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Catalina 10.15.1. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Catalina 10.15.1. An application may be able to read restricted memory.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.85%

53.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	< 10.15.1

References

https://support.apple.com/HT210722Vendor Advisory
https://support.apple.com/HT210722Vendor Advisory

Timeline

Published: Dec 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-8817?

A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Catalina 10.15.1. An application may be able to read restricted memory.

How severe is CVE-2019-8817?

CVE-2019-8817 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8817?

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-2019-8817?

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

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Source: NVD / NIST