CVE-2020-3839: Input Validation

Published Jan 28, 2020
·
Updated

Wi-Fi. A validation issue was addressed with improved input sanitization.

Other sources

A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Catalina 10.15.3. An application may be able to read restricted memory.

Credit

s0ngsari(Theori), Lee(Seoul National University working with Trend Micro)

Affected Software

4 affected componentsFixes available
apple macOS Catalina<10.15.3
10.15.3
apple Mojave
apple High Sierra
Apple iOS and macOS<10.15.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade macOS Catalina to a version that resolves this vulnerability.

    Fixed in 10.15.3

Event History

Feb 27, 2020
CVE Published
via MITRE·08:45 PM
Data Sourced
via MITRE·08:45 PM
DescriptionWeakness
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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-2020-3839?

CVE-2020-3839 is a validation issue in Wi-Fi that has been addressed with improved input sanitization.

2

What software is affected by CVE-2020-3839?

macOS Catalina (versions up to 10.15.3), Mojave, and High Sierra are affected by CVE-2020-3839.

3

How can I fix the vulnerability CVE-2020-3839?

To fix CVE-2020-3839, update to macOS Catalina 10.15.3 or the latest version available for Mojave and High Sierra.

4

Is there any reference for CVE-2020-3839?

Yes, you can find more information about CVE-2020-3839 on the Apple security advisory: https://support.apple.com/en-us/HT210919

Company

Resources

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
CVE-2020-3839 - Input Validation - SecAlerts