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Fencer Vulns
high 8.8

CVE-2022-42823 json

A type confusion issue was addressed with improved memory handling.

published 2022-11-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-45886

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

A type confusion issue was addressed with improved memory handling. This issue is fixed in tvOS 16.1, macOS Ventura 13, watchOS 9.1, Safari 16.1, iOS 16.1 and iPadOS 16. Processing maliciously crafted web content may lead to arbitrary code execution.

Patch / fix

  • Apple macOS 13
  • Apple tvOS 16.1
  • Apple watchOS 9.1
  • wpewebkit Debian 14, Debian 13, Debian 12 2.38.2-1
  • webkit2gtk Debian 14, Debian 13, Debian 12 2.38.2-1

debian advisories DEBIAN-CVE-2022-42823

  • webkit2gtk Ubuntu 20.04 LTS 2.38.2-0ubuntu0.20.04.1
  • webkit2gtk Ubuntu 22.04 LTS 2.38.2-0ubuntu0.22.04.2

ubuntu advisories UBUNTU-CVE-2022-42823

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • webkit2gtk3 RHEL 8 2.38.5-1.el8
  • webkit2gtk3-jsc RHEL 8 2.38.5-1.el8
  • webkit2gtk3 RHEL 9 2.38.5-1.el9
  • webkit2gtk3-jsc RHEL 9 2.38.5-1.el9
  • webkitgtk4 RHEL 7 ELS 2.48.3-2.el7_9
  • webkitgtk4-jsc RHEL 7 ELS 2.48.3-2.el7_9

red hat advisories RHSA-2025:10364RHSA-2023:2834RHSA-2023:2256

  • webkit2gtk3 SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 2.38.2-150200.54.2
  • webkit2gtk3 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 2.38.2-150000.3.122.1
  • webkit2gtk3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 2.38.2-2.120.1
  • webkit2gtk3 SLE Module for Desktop Applications 15 SP4, openSUSE Leap 15.4 2.38.2-150400.4.22.1
  • webkit2gtk4 SLE Module for Development Tools 15 SP4, openSUSE Leap 15.4 2.38.2-150400.4.22.1
  • webkit2gtk3-soup2 SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 2.38.2-150400.4.22.1

suse advisories SUSE-SU-2022:4285-1SUSE-SU-2022:4284-1SUSE-SU-2022:4283-1SUSE-SU-2022:4207-1

  • webkit2gtk3 AlmaLinux 8 2.38.5-1.el8
  • webkit2gtk3-jsc AlmaLinux 8 2.38.5-1.el8
  • webkit2gtk3 AlmaLinux 9 2.38.5-1.el9
  • webkit2gtk3-jsc AlmaLinux 9 2.38.5-1.el9

almalinux advisories ALSA-2023:2834ALSA-2023:2256

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-42823 updated cvss 8.8

webkitgtk: type confusion issue leading to arbitrary code execution

  • Red Hat Enterprise Linux 6 webkitgtk Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.38.5-1.el8, webkit2gtk3-jsc 2.38.5-1.el8
    fixed: vendor fix RHSA-2023:2834
  • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.38.5-1.el9, webkit2gtk3-jsc 2.38.5-1.el9
    fixed: vendor fix RHSA-2023:2256
  • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.48.3-2.el7_9, webkitgtk4-jsc 2.48.3-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.48.3-2.el7_9, webkitgtk4-devel 2.48.3-2.el7_9, webkitgtk4-debuginfo 2.48.3-2.el7_9, webkitgtk4-jsc-devel 2.48.3-2.el7_9
    fixed: vendor fix RHSA-2025:10364

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

1.83% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Apple macOS
  • Apple tvOS
  • Apple watchOS

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.