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CVE-2020-3919

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina…

High7.8EPSS 1.4%
Published
Updated
Reserved
Assigned by
apple

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2. A malicious application may be able to execute arbitrary code with kernel privileges.

Timeline

  1. ID reserved

    By apple

  2. · 4 months later

    Published

  3. · 4 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2020-3919, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
1.4% · top 27% of all CVEs (7 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • Apple · iOS

    • affected unspecified – < iOS 13.4 and iPadOS 13.4

  • Apple · macOS

    • affected unspecified – < macOS Catalina 10.15.4

  • Apple · tvOS

    • affected unspecified – < tvOS 13.4

  • Apple · watchOS

    • affected unspecified – < watchOS 6.2

References (4)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2020-3919 badge
[![CVE-2020-3919](https://trackcve.app/badge/CVE-2020-3919.svg)](https://trackcve.app/cve/CVE-2020-3919)

Record last updated .