Buffer overflow in WebKitGTK+ and WPE WebKit - CVE-2025-43419

Vulnerability identifier: #VU118080

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-2025-43419

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

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.

WebKitGTK+
WPE WebKit
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Manager Server 4.3
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Manager Retail Branch Server 4.3
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Manager Proxy 4.3
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Server
SUSE Manager Proxy
SUSE Manager Retail Branch Server
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Anolis OS
Development Tools Module
Desktop Applications Module
Basesystem Module
openSUSE Leap
macOS
Apple iOS
iPadOS
watchOS
tvOS
visionOS
webkitgtk6.0-doc
javascriptcoregtk6.0-devel
javascriptcoregtk6.0
javascriptcoregtk4.1-devel
javascriptcoregtk4.1
webkit2gtk4.1
webkitgtk6.0
webkitgtk6.0-devel
webkit2gtk4.1-doc
webkit2gtk4.1-devel
webkit2gtk3 (Red Hat package)
webkit2gtk3
webkit2gtk3-devel
webkit2gtk3-jsc
webkit2gtk3-jsc-devel
typelib-1_0-WebKit2WebExtension-4_0
libjavascriptcoregtk-4_0-18
libwebkit2gtk-4_0-37
webkit2gtk-4_0-injected-bundles
webkit2gtk3-debugsource
typelib-1_0-JavaScriptCore-4_0
typelib-1_0-WebKit2-4_0
libjavascriptcoregtk-4_0-18-debuginfo
libwebkit2gtk3-lang
webkit2gtk-4_0-injected-bundles-debuginfo
libwebkit2gtk-4_0-37-debuginfo
WebKitGTK-6.0-lang
WebKitGTK-4.1-lang
WebKitGTK-4.0-lang
libwebkit2gtk-4_1-0
libwebkit2gtk-4_1-0-debuginfo
libjavascriptcoregtk-4_1-0
webkit2gtk3-soup2-debugsource
webkit2gtk4-debugsource
libjavascriptcoregtk-6_0-1-debuginfo
typelib-1_0-WebKit2-4_1
webkitgtk-6_0-injected-bundles
libwebkitgtk-6_0-4-debuginfo
typelib-1_0-JavaScriptCore-4_1
typelib-1_0-WebKit2WebExtension-4_1
webkit2gtk-4_1-injected-bundles
webkit2gtk3-soup2-devel
libjavascriptcoregtk-4_1-0-debuginfo
webkit2gtk-4_1-injected-bundles-debuginfo
libjavascriptcoregtk-6_0-1
libwebkitgtk-6_0-4
libjavascriptcoregtk-4_0-18-32bit
webkit2gtk3-minibrowser
webkit2gtk4-minibrowser-debuginfo
webkit2gtk3-soup2-minibrowser-debuginfo
webkit-jsc-6.0-debuginfo
webkit-jsc-4
webkit-jsc-4-debuginfo
libwebkit2gtk-4_1-0-64bit-debuginfo
webkit-jsc-4.1
webkit-jsc-4.1-debuginfo
webkit2gtk4-minibrowser
webkit2gtk3-minibrowser-debuginfo
webkit-jsc-6.0
webkit2gtk3-soup2-minibrowser
libwebkit2gtk-4_0-37-32bit-debuginfo
libjavascriptcoregtk-4_1-0-32bit
libwebkit2gtk-4_0-37-32bit
libwebkit2gtk-4_1-0-32bit
libjavascriptcoregtk-4_0-18-32bit-debuginfo
libjavascriptcoregtk-4_1-0-32bit-debuginfo
libwebkit2gtk-4_1-0-32bit-debuginfo
libjavascriptcoregtk-4_1-0-64bit
libwebkit2gtk-4_0-37-64bit
libwebkit2gtk-4_1-0-64bit
libjavascriptcoregtk-4_0-18-64bit-debuginfo
libjavascriptcoregtk-4_0-18-64bit
libjavascriptcoregtk-4_1-0-64bit-debuginfo
libwebkit2gtk-4_0-37-64bit-debuginfo
webkit2gtk4-devel
typelib-1_0-WebKit-6_0
typelib-1_0-WebKitWebProcessExtension-6_0
typelib-1_0-JavaScriptCore-6_0
webkitgtk-6_0-injected-bundles-debuginfo
Apple Safari

Install updates from vendor's website.

WebKitGTK+ - update to 2.50.0
WPE WebKit - update to 2.50.0
macOS - update to 26.0 25A354
Apple iOS - update to 26.0 23A341
iPadOS - update to 26.0 23A341
watchOS - update to 26.0 23R352
webkitgtk6.0-doc - update to 2.50.3-1
javascriptcoregtk6.0-devel - update to 2.50.3-1
javascriptcoregtk6.0 - update to 2.50.3-1
javascriptcoregtk4.1-devel - update to 2.50.3-1
javascriptcoregtk4.1 - update to 2.50.3-1
webkit2gtk4.1 - update to 2.50.3-1
webkitgtk6.0 - update to 2.50.3-1
webkitgtk6.0-devel - update to 2.50.3-1
webkit2gtk4.1-doc - update to 2.50.3-1
webkit2gtk4.1-devel - update to 2.50.3-1
webkit2gtk3 (Red Hat package) - addressed in versions 2.50.3-1.el8_10, 2.50.3-1.el9_7
webkit2gtk3 - update to 2.50.3-1.0.1
webkit2gtk3-devel - update to 2.50.3-1.0.1
webkit2gtk3-jsc - update to 2.50.3-1.0.1
webkit2gtk3-jsc-devel - update to 2.50.3-1.0.1
typelib-1_0-WebKit2WebExtension-4_0 - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-devel - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_0-18 - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_0-37 - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
webkit2gtk-4_0-injected-bundles - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-debugsource - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
typelib-1_0-JavaScriptCore-4_0 - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
typelib-1_0-WebKit2-4_0 - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_0-18-debuginfo - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk3-lang - addressed in versions 2.50.3-4.47.1, 2.52.0-4.54.1
webkit2gtk-4_0-injected-bundles-debuginfo - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_0-37-debuginfo - addressed in versions 2.50.3-4.47.1, 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-4.54.1, 2.52.0-150400.4.137.3
WebKitGTK-6.0-lang - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
WebKitGTK-4.1-lang - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
WebKitGTK-4.0-lang - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_1-0 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_1-0-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_1-0 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-soup2-debugsource - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk4-debugsource - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-6_0-1-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
typelib-1_0-WebKit2-4_1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkitgtk-6_0-injected-bundles - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkitgtk-6_0-4-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
typelib-1_0-JavaScriptCore-4_1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
typelib-1_0-WebKit2WebExtension-4_1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk-4_1-injected-bundles - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-soup2-devel - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_1-0-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk-4_1-injected-bundles-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-6_0-1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkitgtk-6_0-4 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_0-18-32bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-minibrowser - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk4-minibrowser-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-soup2-minibrowser-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit-jsc-6.0-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit-jsc-4 - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit-jsc-4-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_1-0-64bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit-jsc-4.1 - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit-jsc-4.1-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk4-minibrowser - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-minibrowser-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit-jsc-6.0 - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk3-soup2-minibrowser - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_0-37-32bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_1-0-32bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_0-37-32bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_1-0-32bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_0-18-32bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_1-0-32bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_1-0-32bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_1-0-64bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_0-37-64bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_1-0-64bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_0-18-64bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_0-18-64bit - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libjavascriptcoregtk-4_1-0-64bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
libwebkit2gtk-4_0-37-64bit-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkit2gtk4-devel - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
typelib-1_0-WebKit-6_0 - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
typelib-1_0-WebKitWebProcessExtension-6_0 - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
typelib-1_0-JavaScriptCore-6_0 - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
webkitgtk-6_0-injected-bundles-debuginfo - addressed in versions 2.50.4-150600.12.54.1, 2.52.0-150400.4.137.3
Apple Safari - update to 26.0
tvOS - update to 26.0 23J353
visionOS - update to 26.0 23M336

• https://support.apple.com/en-us/125110
• https://webkitgtk.org/security/WSA-2025-0008.html

• Two vulnerabilities in WebKitGTK+ and WPE WebKit
• Multiple vulnerabilities in Apple macOS Tahoe
• Multiple vulnerabilities in Apple watchOS
• Multiple vulnerabilities in Apple visionOS
• Multiple vulnerabilities in Apple Safari
• Multiple vulnerabilities in Apple tvOS
• Multiple vulnerabilities in Apple iOS 26 and iPadOS 26
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Anolis OS update for webkit2gtk3
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• Anolis OS update for webkitgtk
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3