A logic issue was addressed with improved checks.

published 2023-10-25 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-47273

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.0%; EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

A logic issue was addressed with improved checks. This issue is fixed in iOS 17.1 and iPadOS 17.1, watchOS 10.1, iOS 16.7.2 and iPadOS 16.7.2, macOS Sonoma 14.1, Safari 17.1, tvOS 17.1. Processing web content may lead to arbitrary code execution.

Patch / fix

fixed in 5 distros 6

Apple iOS and iPadOS 16.7, 17.1
Apple Safari 17.1
Apple tvOS 17.1
Apple macOS 14.1
Apple watchOS 10.1

debian ubuntu red hat suse almalinux rocky linux

wpewebkit Debian 14, Debian 13 2.42.2-1
webkit2gtk Debian 12 2.42.2-1~deb12u1
webkit2gtk Debian 14, Debian 13 2.42.2-1

debian advisories DEBIAN-CVE-2023-42852

webkit2gtk Ubuntu 22.04 LTS 2.42.2-0ubuntu0.22.04.1
webkit2gtk Ubuntu 24.04 LTS 2.42.2-1

ubuntu advisories UBUNTU-CVE-2023-42852

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 2.42.5-1.el8
webkit2gtk3-jsc RHEL 8 2.42.5-1.el8
webkit2gtk3 RHEL 9 2.42.5-1.el9
webkit2gtk3-jsc RHEL 9 2.42.5-1.el9
webkitgtk4 RHEL 7 ELS 2.48.3-2.el7_9
webkitgtk4-jsc RHEL 7 ELS 2.48.3-2.el7_9
webkit2gtk3 RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 2.46.3-1.el8_4
webkit2gtk3-jsc RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 2.46.3-1.el8_4

red hat advisories RHSA-2025:10364 RHSA-2024:9679 RHSA-2024:9646 RHSA-2024:9680 RHSA-2024:9653 RHSA-2024:8496

webkit2gtk3 SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +1 more 2.42.2-2.158.2
webkit2gtk3 SLE Module for Desktop Applications 15 SP5, SLE Module for Desktop Applications 15 SP4, openSUSE Leap 15.5 +1 more 2.42.2-150400.4.64.2
webkit2gtk4 SLE Module for Development Tools 15 SP5, SLE Module for Development Tools 15 SP4, openSUSE Leap 15.5 +1 more 2.42.2-150400.4.64.2
webkit2gtk3-soup2 SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.5 +1 more 2.42.2-150400.4.64.2
webkit2gtk3 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +5 more 2.42.2-150200.91.1
webkit2gtk3 SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 2.42.2-150000.3.157.1

suse advisories SUSE-SU-2023:4651-1 SUSE-SU-2023:4561-1 SUSE-SU-2023:4559-1 SUSE-SU-2023:4558-1

webkit2gtk3 AlmaLinux 8 2.42.5-1.el8
webkit2gtk3-jsc AlmaLinux 8 2.42.5-1.el8
webkit2gtk3 AlmaLinux 9 2.42.5-1.el9
webkit2gtk3-jsc AlmaLinux 9 2.42.5-1.el9

almalinux advisories ALSA-2024:2982 ALSA-2024:2126

webkit2gtk3 Rocky Linux 8 2.42.5-1.el8

rocky linux advisories RLSA-2024:2982

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-2023-42852 updated 2026-11-07 cvss 8.8

webkitgtk: Processing web content may lead to arbitrary code execution

Red Hat Enterprise Linux 6 webkitgtk
affected: workaround, no fix planned “Out of support scope”
Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
affected: workaround, no fix planned “Will not fix”
Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.42.5-1.el8, webkit2gtk3-jsc 2.42.5-1.el8
fixed: vendor fix RHSA-2024:2982
Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.42.5-1.el9, webkit2gtk3-jsc 2.42.5-1.el9
fixed: vendor fix RHSA-2024:2126
Red Hat Enterprise Linux AppStream AUS (v. 8.2) webkit2gtk3 2.46.3-1.el8_2, webkit2gtk3-jsc 2.46.3-1.el8_2
fixed: vendor fix RHSA-2024:9680
Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3 2.46.3-1.el8_4, webkit2gtk3-jsc 2.46.3-1.el8_4
fixed: vendor fix RHSA-2024:9679
Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3 2.46.3-1.el8_6, webkit2gtk3-jsc 2.46.3-1.el8_6
fixed: vendor fix RHSA-2024:9653
Red Hat Enterprise Linux AppStream E4S (v.8.4) webkit2gtk3 2.46.3-1.el8_4, webkit2gtk3-jsc 2.46.3-1.el8_4
fixed: vendor fix RHSA-2024:9679

show 7 more

Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3 2.46.3-1.el8_6, webkit2gtk3-jsc 2.46.3-1.el8_6
fixed: vendor fix RHSA-2024:9653
Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3 2.46.1-1.el9_0, webkit2gtk3-jsc 2.46.1-1.el9_0
fixed: vendor fix RHSA-2024:8496
Red Hat Enterprise Linux AppStream EUS (v.8.8) webkit2gtk3 2.46.3-1.el8_8, webkit2gtk3-jsc 2.46.3-1.el8_8
fixed: vendor fix RHSA-2024:9646
Red Hat Enterprise Linux AppStream EUS (v.9.2) webkit2gtk3 2.46.1-1.el9_2, webkit2gtk3-jsc 2.46.1-1.el9_2
fixed: vendor fix RHSA-2024:8492
Red Hat Enterprise Linux AppStream TUS (v.8.4) webkit2gtk3 2.46.3-1.el8_4, webkit2gtk3-jsc 2.46.3-1.el8_4
fixed: vendor fix RHSA-2024:9679
Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3 2.46.3-1.el8_6, webkit2gtk3-jsc 2.46.3-1.el8_6
fixed: vendor fix RHSA-2024:9653
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 (2025-04-23)

Exploit prediction

1.98% chance of exploitation in the next 30 days, higher than 80% 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 iOS and iPadOS
Apple Safari
Apple tvOS
Apple macOS
Apple watchOS

References

support.apple.com /en-us/HT213981
release-notes, vendor-advisory
support.apple.com /en-us/HT213986
release-notes, vendor-advisory
support.apple.com /en-us/HT213987
release-notes, vendor-advisory
support.apple.com /en-us/HT213984
release-notes, vendor-advisory
support.apple.com /en-us/HT213988
release-notes, vendor-advisory
support.apple.com /en-us/HT213982
release-notes, vendor-advisory
support.apple.com /kb/HT213984
third-party-advisory
seclists.org /fulldisclosure/2023/Oct/23
mailing-list, third-party-advisory
seclists.org /fulldisclosure/2023/Oct/22
mailing-list, third-party-advisory
seclists.org /fulldisclosure/2023/Oct/19
mailing-list, third-party-advisory
seclists.org /fulldisclosure/2023/Oct/27
mailing-list, third-party-advisory
seclists.org /fulldisclosure/2023/Oct/24
mailing-list, third-party-advisory
seclists.org /fulldisclosure/2023/Oct/25
mailing-list, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/ZTCZGQPRDAOPP6NK4CIDJKIPMBWD5J7K/
mailing-list
openwall.com /lists/oss-security/2023/11/15/1
mailing-list
debian.org /security/2023/dsa-5557
third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/RPPMOWFYZODONTA3RLZOKSGNR4DELGG2/
mailing-list, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/S3O7ITSBZDHLBM5OG22K6RZAHRRTGECM/
mailing-list, third-party-advisory
security.gentoo.org /glsa/202401-33
third-party-advisory

Sources

CVE List CVE-2023-42852
NVD CVE-2023-42852

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.

Summary