CVE-2020-3837

Name: CVE-2020-3837
Creator: NVD / NIST
Published: 2020-02-27T21:15:16.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10Actively ExploitedEPSS 16.11%

Last modified Jun 17, 2026

CVE-2020-3837 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. CISA has confirmed active exploitation in the wild. EPSS estimates a 16.11% chance of exploitation in the next 30 days.

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. An 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

16.11%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jul 18, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Ipados	< 13.3.1
Apple	Iphone Os	< 13.3.1
Apple	Mac Os X	< 10.15.3
Apple	Tvos	< 13.3.1
Apple	Watchos	< 6.1.2

References

https://support.apple.com/HT210918Release Notes, Vendor Advisory
https://support.apple.com/HT210919Release Notes, Vendor Advisory
https://support.apple.com/HT210920Release Notes, Vendor Advisory
https://support.apple.com/HT210921Release Notes, Vendor Advisory
https://support.apple.com/HT210918Release Notes, Vendor Advisory
https://support.apple.com/HT210919Release Notes, Vendor Advisory
https://support.apple.com/HT210920Release Notes, Vendor Advisory
https://support.apple.com/HT210921Release Notes, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3837US Government Resource

Timeline

Published: Feb 27, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-3837?

How severe is CVE-2020-3837?

CVE-2020-3837 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 16.11% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-3837?

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-2020-3837?

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

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Source: NVD / NIST