Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-3837

CVE-2020-3837HIGH

Apple Multiple Products

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  H  H  H    7.8   .1484   96.6   YES

AFFECTED
  Product  Versions       Fixed
  iOS      unspecified –  —
  macOS    unspecified –  —
  tvOS     unspecified –  —
  watchOS  unspecified –  —

TIMELINE
  Dec 18  Reserved by apple
  Feb 27  Published (CNA: apple)
  Jun 27  Added to CISA KEV, remediation due 2022-07-18

CWE-787 · CNA: apple · CVSS v3.1 · 5 references · KEV due July 18, 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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
December 18, 2019	Reserved	Reserved by apple
February 27, 2020	Published	Published (CNA: apple)
June 27, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-07-18

Affected

Affected products and packages — 4 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Apple	iOS	—	unspecified	—
Apple	macOS	—	unspecified	—
Apple	tvOS	—	unspecified	—
Apple	watchOS	—	unspecified	—

Weaknesses

CWE-787

References (5)

https://support.apple.com/HT210918 [x_refsource_MISC]
https://support.apple.com/HT210919 [x_refsource_MISC]
https://support.apple.com/HT210920 [x_refsource_MISC]
https://support.apple.com/HT210921 [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3837 [government-resource]

Authoritative record: CVE-2020-3837 at cve.org

Vendors: apple

Weaknesses: CWE-787

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-3837 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.