synced 1 MIN AGO
01 Record

CVE-2021-1820

A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted

UnratedPUBLISHEDCNA: apple
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.33% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 70.7% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-09-08 14:54Z5 YR AGO
Last updated
2024-08-03 16:25Z2 YR AGO
Reserved
2020-12-08
Assigning CNA
apple
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-665Improper InitializationClass
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
a32ab7b0716c3ab4fa17dd7d9cf7ceddbdfb77b2563d6873a2e0ed59c0186bff

05 Affected products

VendorProductVersionsPlatforms
AppleiOS and iPadOS< 14.5—
AppletvOS< 14.5—
ApplewatchOS< 7.4—
ApplemacOS< 11.3—

06 References

07 Fixed in

AlmaLinux 8

  • OpenEXR-devel
    Fixed in 2.2.0-12.el8
  • OpenEXR-libs
    Fixed in 2.2.0-12.el8
  • accountsservice-devel
    Fixed in 0.6.55-1.el8
  • atkmm
    Fixed in 2.24.2-7.el8
  • atkmm-devel
    Fixed in 2.24.2-7.el8
  • atkmm-doc
    Fixed in 2.24.2-7.el8
  • cairomm
    Fixed in 1.12.0-8.el8
  • cairomm-devel
    Fixed in 1.12.0-8.el8
  • cairomm-doc
    Fixed in 1.12.0-8.el8
  • chrome-gnome-shell
    Fixed in 10.1-7.el8
  • dleyna-core
    Fixed in 0.6.0-3.el8
  • dleyna-server
    Fixed in 0.6.0-3.el8
  • enchant2
    Fixed in 2.2.3-3.el8
  • enchant2-devel
    Fixed in 2.2.3-3.el8
  • gamin
    Fixed in 0.1.10-32.el8
  • gamin-devel
    Fixed in 0.1.10-32.el8
  • geoclue2
    Fixed in 2.5.5-2.el8
  • geoclue2-demos
    Fixed in 2.5.5-2.el8
  • geoclue2-devel
    Fixed in 2.5.5-2.el8
  • geoclue2-libs
    Fixed in 2.5.5-2.el8
  • geocode-glib
    Fixed in 3.26.0-3.el8
  • geocode-glib-devel
    Fixed in 3.26.0-3.el8
  • gjs
    Fixed in 1.56.2-5.el8
  • gjs-devel
    Fixed in 1.56.2-5.el8
  • glib2-doc
    Fixed in 2.56.4-9.el8
  • glib2-static
    Fixed in 2.56.4-9.el8
  • glibmm24
    Fixed in 2.56.0-2.el8
  • glibmm24-devel
    Fixed in 2.56.0-2.el8
  • glibmm24-doc
    Fixed in 2.56.0-2.el8
  • gnome-boxes
    Fixed in 3.36.5-8.el8
  • gnome-photos
    Fixed in 3.28.1-4.el8
  • gnome-photos-tests
    Fixed in 3.28.1-4.el8
  • gnome-terminal
    Fixed in 3.28.3-3.el8
  • gnome-terminal-nautilus
    Fixed in 3.28.3-3.el8
  • gtk-doc
    Fixed in 1.28-3.el8
  • gtk2
    Fixed in 2.24.32-5.el8
  • gtk2-devel
    Fixed in 2.24.32-5.el8
  • gtk2-devel-docs
    Fixed in 2.24.32-5.el8
  • gtk2-immodule-xim
    Fixed in 2.24.32-5.el8
  • gtk2-immodules
    Fixed in 2.24.32-5.el8

41 further packages in AlmaLinux 8 not shown (first 40 listed).

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • wpewebkit
    Not affected

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • OpenEXR-devel
    Fixed in 2.2.0-12.el8
  • OpenEXR-libs
    Fixed in 2.2.0-12.el8
  • accountsservice-devel
    Fixed in 0.6.55-1.el8
  • atkmm
    Fixed in 2.24.2-7.el8
  • atkmm-devel
    Fixed in 2.24.2-7.el8
  • atkmm-doc
    Fixed in 2.24.2-7.el8
  • cairomm
    Fixed in 1.12.0-8.el8
  • cairomm-devel
    Fixed in 1.12.0-8.el8
  • cairomm-doc
    Fixed in 1.12.0-8.el8
  • chrome-gnome-shell
    Fixed in 10.1-7.el8
  • dleyna-core
    Fixed in 0.6.0-3.el8
  • dleyna-server
    Fixed in 0.6.0-3.el8
  • enchant2
    Fixed in 2.2.3-3.el8
  • enchant2-devel
    Fixed in 2.2.3-3.el8
  • gamin
    Fixed in 0.1.10-32.el8
  • gamin-devel
    Fixed in 0.1.10-32.el8
  • geoclue2
    Fixed in 2.5.5-2.el8
  • geoclue2-demos
    Fixed in 2.5.5-2.el8
  • geoclue2-devel
    Fixed in 2.5.5-2.el8
  • geoclue2-libs
    Fixed in 2.5.5-2.el8
  • geocode-glib
    Fixed in 3.26.0-3.el8
  • geocode-glib-devel
    Fixed in 3.26.0-3.el8
  • gjs
    Fixed in 1.56.2-5.el8
  • gjs-devel
    Fixed in 1.56.2-5.el8
  • glib2-doc
    Fixed in 2.56.4-9.el8
  • glib2-static
    Fixed in 2.56.4-9.el8
  • glibmm24
    Fixed in 2.56.0-2.el8
  • glibmm24-devel
    Fixed in 2.56.0-2.el8
  • glibmm24-doc
    Fixed in 2.56.0-2.el8
  • gnome-boxes
    Fixed in 3.36.5-8.el8
  • gnome-photos
    Fixed in 3.28.1-4.el8
  • gnome-photos-tests
    Fixed in 3.28.1-4.el8
  • gnome-terminal
    Fixed in 3.28.3-3.el8
  • gnome-terminal-nautilus
    Fixed in 3.28.3-3.el8
  • gtk-doc
    Fixed in 1.28-3.el8
  • gtk2
    Fixed in 2.24.32-5.el8
  • gtk2-devel
    Fixed in 2.24.32-5.el8
  • gtk2-devel-docs
    Fixed in 2.24.32-5.el8
  • gtk2-immodule-xim
    Fixed in 2.24.32-5.el8
  • gtk2-immodules
    Fixed in 2.24.32-5.el8

41 further packages in CloudLinux 8 not shown (first 40 listed).

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • webkit2gtk
    Fixed in 2.30.1-1
  • wpewebkit
    Fixed in 2.30.0-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • webkit2gtk
    Fixed in 2.30.1-1
  • wpewebkit
    Fixed in 2.30.0-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • webkit2gtk
    Fixed in 2.30.1-1
  • wpewebkit
    Fixed in 2.30.0-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • qtwebkit-opensource-src
    No fix yet
  • qtwebkit-source
    No fix yet
  • webkit2gtk
    No fix yet
  • webkitgtk
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • qtwebkit-opensource-src
    No fix yet
  • qtwebkit-source
    No fix yet
  • webkit2gtk
    Fixed in 2.30.3-0ubuntu0.18.04.1
  • webkitgtk
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • qtwebkit-opensource-src
    No fix yet
  • webkit2gtk
    Fixed in 2.30.3-0ubuntu0.20.04.1
  • wpewebkit
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • qtwebkit-opensource-src
    No fix yet
  • wpewebkit
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • qtwebkit-opensource-src
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.