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CVE-2020-3837

Apple Multiple Products Memory Corruption

7.8 HIGHActively exploited (CISA KEV)EPSS 14.8%
  1. Published27 Feb 2020
  2. Added to CISA KEV27 Jun 2022
  3. Remediation due18 Jul 2022
Actively exploited (CISA KEV)

Apple iOS, iPadOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability that could allow an application to execute code with kernel privileges.

Added to KEV: 27 Jun 2022Federal remediation due: 18 Jul 2022

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

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

Remediation

Fixed in
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

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Frequently asked

Is CVE-2020-3837 being actively exploited?

Yes. CVE-2020-3837 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 27 Jun 2022.

How severe is CVE-2020-3837?

CVE-2020-3837 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 14.8% probability of exploitation.

Which products are affected by CVE-2020-3837?

Affected products include Apple iPadOS, Apple iPhone OS, Apple Mac OS X, Apple Tvos, Apple Watchos.

How do I fix CVE-2020-3837?

Upgrade affected software to a fixed version, for example Apple iPadOS 13.3.1, Apple iPhone OS 13.3.1, Apple Mac OS X 10.15.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2020-3837 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.