CVE-2020-3837

HIGH

7.8

CVSS Score

Published: February 27, 2020 at 08:45 PM UTC

Updated: June 17, 2026 at 03:19 AM UTC

5 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

HIGH7.8

Exploitation

CISA KEV

Exploit prediction

EPSS 15%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score14.8%

EPSS (Exploit Prediction Scoring System) estimates a 14.8% chance this CVE is exploited in the wild within the next 30 days — higher than 97% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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

Required Action

Apply updates per vendor instructions.

Ransomware Use

Unknown

Added to KEV

Jun 27, 2022

Remediation Due

Jul 18, 2022

1564 days overdue

Notes

https://nvd.nist.gov/vuln/detail/CVE-2020-3837

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS · Apple

95%

v < 13.3.1

Affected range stops below 13.3.1, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 13.3.1v < iOS 13.3.1 and iPadOS 13.3.1

Affected range stops below 13.3.1, so it looks safe — our inference, not a vendor statement

Affected range stops below iOS 13.3.1 and iPadOS 13.3.1, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 10.15.3v < macOS Catalina 10.15.3

Affected range stops below 10.15.3, so it looks safe — our inference, not a vendor statement

Affected range stops below macOS Catalina 10.15.3, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 13.3.1v < tvOS 13.3.1

Affected range stops below 13.3.1, so it looks safe — our inference, not a vendor statement

Affected range stops below tvOS 13.3.1, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 6.1.2v < watchOS 6.1.2

Affected range stops below 6.1.2, so it looks safe — our inference, not a vendor statement

Affected range stops below watchOS 6.1.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://support.apple.com/HT210918

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://support.apple.com/HT210919

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://support.apple.com/HT210920

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://support.apple.com/HT210921

US Government Resource

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3837

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-787

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