synced 12 MIN AGO
01 Record

CVE-2021-1871

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A

CriticalKEVPUBLISHEDCNA: apple
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
View raw JSON

02 Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A

03 Exploitation and scoring

Exploitation
Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2021-11-03. Federal remediation due 2021-11-17.
SSVC decision
  • ExploitationactiveCISA reports credible evidence of active exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
7.00% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 93.6% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. 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
2021-04-02 18:06Z5 YR AGO
Last updated
2025-10-21 23:25Z1 YR AGO
Reserved
2020-12-08
Assigning CNA
apple
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
e3d9b7387fda44db63c8a282dc9173c655424dca7e76769c21761a979b034242

05 Affected products

VendorProductVersionsPlatforms
AppleiOS and iPadOS< 14.4—
ApplemacOS< 11.2—

06 References

07 Fixed in

AlmaLinux 8

  • LibRaw
    Fixed in 0.19.5-3.el8
  • LibRaw-devel
    Fixed in 0.19.5-3.el8
  • accountsservice
    Fixed in 0.6.55-2.el8
  • accountsservice-devel
    Fixed in 0.6.55-2.el8
  • accountsservice-libs
    Fixed in 0.6.55-2.el8
  • gdm
    Fixed in 1:40.0-15.el8
  • gnome-autoar
    Fixed in 0.2.3-2.el8
  • gnome-calculator
    Fixed in 3.28.2-2.el8
  • gnome-classic-session
    Fixed in 3.32.1-20.el8
  • gnome-control-center
    Fixed in 3.28.2-28.el8
  • gnome-control-center-filesystem
    Fixed in 3.28.2-28.el8
  • gnome-online-accounts
    Fixed in 3.28.2-3.el8
  • gnome-online-accounts-devel
    Fixed in 3.28.2-3.el8
  • gnome-session
    Fixed in 3.28.1-13.el8
  • gnome-session-kiosk-session
    Fixed in 3.28.1-13.el8
  • gnome-session-wayland-session
    Fixed in 3.28.1-13.el8
  • gnome-session-xsession
    Fixed in 3.28.1-13.el8
  • gnome-settings-daemon
    Fixed in 3.32.0-16.el8.alma
  • gnome-shell
    Fixed in 3.32.2-40.el8
  • gnome-shell-extension-apps-menu
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-auto-move-windows
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-common
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-dash-to-dock
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-desktop-icons
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-disable-screenshield
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-drive-menu
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-gesture-inhibitor
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-horizontal-workspaces
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-launch-new-instance
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-native-window-placement
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-no-hot-corner
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-panel-favorites
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-places-menu
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-screenshot-window-sizer
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-systemMonitor
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-top-icons
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-updates-dialog
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-user-theme
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-window-grouper
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-window-list
    Fixed in 3.32.1-20.el8

17 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
    Fixed in 2.32.0-1

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

CloudLinux 8

  • LibRaw
    Fixed in 0.19.5-3.el8
  • LibRaw-devel
    Fixed in 0.19.5-3.el8
  • accountsservice
    Fixed in 0.6.55-2.el8
  • accountsservice-devel
    Fixed in 0.6.55-2.el8
  • accountsservice-libs
    Fixed in 0.6.55-2.el8
  • gdm
    Fixed in 1:40.0-15.el8
  • gnome-autoar
    Fixed in 0.2.3-2.el8
  • gnome-calculator
    Fixed in 3.28.2-2.el8
  • gnome-classic-session
    Fixed in 3.32.1-20.el8
  • gnome-control-center
    Fixed in 3.28.2-28.el8
  • gnome-control-center-filesystem
    Fixed in 3.28.2-28.el8
  • gnome-online-accounts
    Fixed in 3.28.2-3.el8
  • gnome-online-accounts-devel
    Fixed in 3.28.2-3.el8
  • gnome-session
    Fixed in 3.28.1-13.el8
  • gnome-session-kiosk-session
    Fixed in 3.28.1-13.el8
  • gnome-session-wayland-session
    Fixed in 3.28.1-13.el8
  • gnome-session-xsession
    Fixed in 3.28.1-13.el8
  • gnome-settings-daemon
    Fixed in 3.32.0-16.el8.alma
  • gnome-shell
    Fixed in 3.32.2-40.el8
  • gnome-shell-extension-apps-menu
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-auto-move-windows
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-common
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-dash-to-dock
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-desktop-icons
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-disable-screenshield
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-drive-menu
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-gesture-inhibitor
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-horizontal-workspaces
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-launch-new-instance
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-native-window-placement
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-no-hot-corner
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-panel-favorites
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-places-menu
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-screenshot-window-sizer
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-systemMonitor
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-top-icons
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-updates-dialog
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-user-theme
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-window-grouper
    Fixed in 3.32.1-20.el8
  • gnome-shell-extension-window-list
    Fixed in 3.32.1-20.el8

17 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 2.32.0-2
  • wpewebkit
    Fixed in 2.32.0-2

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

Debian 13

  • webkit2gtk
    Fixed in 2.32.0-2
  • wpewebkit
    Fixed in 2.32.0-2

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

Debian 14

  • webkit2gtk
    Fixed in 2.32.0-2
  • wpewebkit
    Fixed in 2.32.0-2

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 2.32.0-0ubuntu0.18.04.1
  • 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 2.32.0-0ubuntu0.20.04.1
  • 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.