CVE-2020-3851: Use After Free

Published Jan 28, 2020
·
Updated

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra, macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to gain elevated privileges.

Other sources

IOThunderboltFamily. A use after free issue was addressed with improved memory management.

Credit

Xiaolong Bai, Min (Spark) Zheng(Alibaba Inc), Luyi Xing(Indiana University Bloomington)

Affected Software

5 affected componentsFixes available
apple macOS Catalina<10.15.3
10.15.3
apple Mojave
apple High Sierra
Apple iOS and macOS>=10.15.2<10.15.3
Apple iOS and macOS>=10.13.6<10.15.4

Event History

Oct 27, 2020
CVE Published
via MITRE·08:30 PM
Data Sourced
via MITRE·08:30 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is CVE-2020-3851?

CVE-2020-3851 is a vulnerability related to IOThunderboltFamily in macOS Catalina, Mojave, and High Sierra.

2

What is the severity of CVE-2020-3851?

The severity of CVE-2020-3851 is not mentioned in the provided information.

3

How does CVE-2020-3851 affect macOS Catalina?

CVE-2020-3851 affects macOS Catalina versions 10.15.4 and 10.15.3.

4

How does CVE-2020-3851 affect Apple Mojave?

CVE-2020-3851 affects Apple Mojave, but specific versions are not mentioned.

5

How does CVE-2020-3851 affect Apple High Sierra?

CVE-2020-3851 affects Apple High Sierra, but specific versions are not mentioned.

6

How can I fix the vulnerability CVE-2020-3851?

To fix the vulnerability CVE-2020-3851, it is recommended to update macOS Catalina to version 10.15.4 or 10.15.3 when available.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203