Buffer overflow in WebKitGTK+ and WPE WebKit - CVE-2025-43433

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Main Vulnerability Database Vulnerabilities #VU117966

Buffer overflow in WebKitGTK+ and WPE WebKit - CVE-2025-43433

Published: November 4, 2025 / Updated: March 20, 2026


Vulnerability identifier: #VU117966
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-43433
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website. trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

WebKitGTK+
WPE WebKit
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
visionOS
Desktop Applications Module
Basesystem Module
Development Tools Module
openSUSE Leap
tvOS
iPadOS
Apple iOS
macOS
watchOS
Apple Safari
webkit2gtk-4_0-injected-bundles-debuginfo
libwebkit2gtk3-lang
webkit2gtk3-devel
libwebkit2gtk-4_0-37
typelib-1_0-WebKit2-4_0
webkit2gtk-4_0-injected-bundles
libjavascriptcoregtk-4_0-18
libwebkit2gtk-4_0-37-debuginfo
libjavascriptcoregtk-4_0-18-debuginfo
typelib-1_0-WebKit2WebExtension-4_0
typelib-1_0-JavaScriptCore-4_0
webkit2gtk3-debugsource
libwebkitgtk-6_0-4
webkitgtk-6_0-injected-bundles
typelib-1_0-WebKit2-4_1
libwebkitgtk-6_0-4-debuginfo
typelib-1_0-WebKit-6_0
webkit-jsc-4.1
webkit2gtk4-devel
libwebkit2gtk-4_0-37-32bit-debuginfo
webkit2gtk3-soup2-minibrowser
libjavascriptcoregtk-4_1-0-debuginfo
webkit2gtk-4_1-injected-bundles
webkit2gtk3-soup2-debugsource
webkit2gtk3-soup2-minibrowser-debuginfo
webkit-jsc-4
libwebkit2gtk-4_0-37-32bit
libwebkit2gtk-4_0-37-64bit
libjavascriptcoregtk-4_1-0-64bit
libwebkit2gtk-4_1-0-64bit-debuginfo
libwebkit2gtk-4_0-37-64bit-debuginfo
libjavascriptcoregtk-4_0-18-64bit-debuginfo
libjavascriptcoregtk-4_1-0-64bit-debuginfo
libjavascriptcoregtk-4_0-18-64bit
libwebkit2gtk-4_1-0-64bit
libjavascriptcoregtk-4_0-18-32bit
libjavascriptcoregtk-4_0-18-32bit-debuginfo
webkit-jsc-4.1-debuginfo
libwebkit2gtk-4_1-0-32bit
libjavascriptcoregtk-4_1-0-32bit-debuginfo
libwebkit2gtk-4_1-0-32bit-debuginfo
libjavascriptcoregtk-4_1-0-32bit
webkit2gtk-4_1-injected-bundles-debuginfo
webkit2gtk4-minibrowser-debuginfo
WebKitGTK-4.1-lang
WebKitGTK-4.0-lang
WebKitGTK-6.0-lang
webkitgtk-6_0-injected-bundles-debuginfo
webkit-jsc-4-debuginfo
libjavascriptcoregtk-6_0-1
webkit-jsc-6.0
typelib-1_0-JavaScriptCore-4_1
typelib-1_0-JavaScriptCore-6_0
libwebkit2gtk-4_1-0-debuginfo
webkit-jsc-6.0-debuginfo
libjavascriptcoregtk-4_1-0
libwebkit2gtk-4_1-0
webkit2gtk4-minibrowser
webkit2gtk3-minibrowser
webkit2gtk3-soup2-devel
typelib-1_0-WebKitWebProcessExtension-6_0
webkit2gtk4-debugsource
webkit2gtk3-minibrowser-debuginfo
typelib-1_0-WebKit2WebExtension-4_1
libjavascriptcoregtk-6_0-1-debuginfo

How to mitigate CVE-2025-43433

Install updates from vendor's website.

WebKitGTK+ - update to 2.50.2
WPE WebKit - update to 2.50.2
visionOS - update to 26.1
Apple Safari - update to 26.1
tvOS - update to 26.1 23J580
iPadOS - addressed in versions 18.7.2 22H124, 26.1 23B85
Apple iOS - addressed in versions 18.7.2 22H124, 26.1 23B85
macOS - update to 26.1 25B78
watchOS - update to 26.1 23S37
webkit2gtk-4_0-injected-bundles-debuginfo - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk3-lang - update to 2.52.0-4.54.1
webkit2gtk3-devel - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2-4_0 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_0-injected-bundles - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-debuginfo - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-debuginfo - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2WebExtension-4_0 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-JavaScriptCore-4_0 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-debugsource - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkitgtk-6_0-4 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkitgtk-6_0-injected-bundles - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2-4_1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkitgtk-6_0-4-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit-6_0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4.1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-devel - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-minibrowser - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_1-injected-bundles - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-debugsource - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-minibrowser-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4.1-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_1-injected-bundles-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-minibrowser-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
WebKitGTK-4.1-lang - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
WebKitGTK-4.0-lang - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
WebKitGTK-6.0-lang - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkitgtk-6_0-injected-bundles-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-6_0-1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-6.0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-JavaScriptCore-4_1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-JavaScriptCore-6_0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-6.0-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-minibrowser - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-minibrowser - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-devel - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKitWebProcessExtension-6_0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-debugsource - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-minibrowser-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2WebExtension-4_1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-6_0-1-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1

External References

Related Security Bulletins