high 8.8

CVE-2022-48503 kev in the critical feed json

The issue was addressed with improved bounds checks.

published 2023-08-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51199

cvss: 8.8; version 3.1, CNA
cisa kev: Exploited; added 2025-10-20
epss: 3.2%; EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits: 0; none known

The issue was addressed with improved bounds checks. This issue is fixed in tvOS 15.6, watchOS 8.7, iOS 15.6 and iPadOS 15.6, macOS Monterey 12.5, Safari 15.6. Processing web content may lead to arbitrary code execution.

Patch / fix

cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

fixed in 5 distros 4

Apple macOS 12.5
Apple tvOS 15.6
Apple Safari 15.6
Apple watchOS 8.7
Apple iOS and iPadOS 15.6

debian ubuntu red hat suse

wpewebkit Debian 14, Debian 13, Debian 12 2.38.0-1
webkit2gtk Debian 14, Debian 13, Debian 12 2.38.0-1

debian advisories DEBIAN-CVE-2022-48503

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-2022-48503

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
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-2024:9680 RHSA-2024:9653 RHSA-2023:2834 RHSA-2023:2256

webkit2gtk3 SLE Module for Desktop Applications 15 SP5, SLE Module for Desktop Applications 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.45.3
webkit2gtk4 SLE Module for Development Tools 15 SP5, SLE Module for Development Tools 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.45.3
webkit2gtk3-soup2 SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.45.3
webkit2gtk3 SLES for SAP 12 SP5, SLES 12 SP5, SLES 12 SP2-BCL +2 more 2.40.5-2.146.1
webkit2gtk3 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +7 more 2.40.5-150200.78.1
webkit2gtk3 SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 2.40.5-150000.3.144.1

suse advisories SUSE-SU-2023:3419-1 SUSE-SU-2023:3300-1 SUSE-SU-2023:3237-1 SUSE-SU-2023:3233-1

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-2022-48503 updated 2026-11-08 cvss 8.8

webkitgtk: improper bounds checking leading 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 2.38.5-1.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 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 4 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 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

Timeline

2023-08-14 Published
2025-10-20 Added to CISA KEV
2025-10-20 CISA SSVC: exploitation active
2025-11-10 CISA patch deadline

Known exploited

Added: 12 mo ago (2025-10-20)
Patch by: 2025-11-10 (11 mo ago)
Ransomware: Not known
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor, product: Apple, Multiple Products
CISA name: Apple Multiple Products Unspecified Vulnerability

CISA SSVC

Exploitation: Active, exploited in the wild
Automatable: no
Technical impact: total
Assessed: 12 mo ago (2025-10-20)

Exploit prediction

3.21% chance of exploitation in the next 30 days, higher than 88% 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 Safari
Apple watchOS
Apple iOS and iPadOS

Classification

Weakness

CWE-129 Improper Validation of Array Index

References

support.apple.com /en-us/HT213345
release-notes, vendor-advisory
support.apple.com /en-us/HT213342
release-notes, vendor-advisory
support.apple.com /en-us/HT213341
release-notes, vendor-advisory
support.apple.com /en-us/HT213340
release-notes, vendor-advisory
support.apple.com /en-us/HT213346
release-notes, vendor-advisory
cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-48503
government-resource, us-government-resource

Sources

CVE List CVE-2022-48503
NVD CVE-2022-48503

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