CVE-2020-3919

Name: CVE-2020-3919
Creator: NVD / NIST
Published: 2020-04-01T18:15:17.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.39%

Last modified Jun 17, 2026

CVE-2020-3919 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2. A malicious application may be able to execute arbitrary code with kernel privileges.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.39%

68.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-665

Affected Software

Vendor	Product	Versions
Apple	Ipados	< 13.4
Apple	Iphone Os	< 13.4
Apple	Mac Os X	< 10.15.4
Apple	Tvos	< 13.4
Apple	Watchos	< 6.2

References

https://support.apple.com/HT211100Vendor Advisory
https://support.apple.com/HT211101Vendor Advisory
https://support.apple.com/HT211102Vendor Advisory
https://support.apple.com/HT211103Vendor Advisory
https://support.apple.com/HT211100Vendor Advisory
https://support.apple.com/HT211101Vendor Advisory
https://support.apple.com/HT211102Vendor Advisory
https://support.apple.com/HT211103Vendor Advisory

Timeline

Published: Apr 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3919?

How severe is CVE-2020-3919?

CVE-2020-3919 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3919?

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-2020-3919?

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

Scan your code now

Source: NVD / NIST