Buffer overflow in WebKitGTK+ and WPE WebKit - CVE-2025-66287

Vulnerability identifier: #VU119212

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-66287

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a boundary error when HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and crash the browser.

WebKitGTK+
WPE WebKit
SUSE Manager Server 4.3
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP4
Debian Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Manager Proxy 4.3
SUSE Linux Enterprise Server 15 SP6
SUSE Manager Retail Branch Server 4.3
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 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Basesystem Module
Desktop Applications Module
Development Tools Module
openSUSE Leap
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
webkit2gtk (Ubuntu package)
webkit2gtk4.1
javascriptcoregtk6.0-devel
webkitgtk6.0-doc
javascriptcoregtk6.0
webkit2gtk4.1-doc
webkitgtk6.0-devel
webkitgtk6.0
webkit2gtk4.1-devel
javascriptcoregtk4.1-devel
javascriptcoregtk4.1
webkit2gtk3 (Red Hat package)
webkit2gtk (Debian package)
webkit2gtk3-jsc
webkit2gtk3-devel
webkit2gtk3
webkit2gtk3-jsc-devel
webkitgtk4 (Red Hat package)
webkit2gtk-4_0-injected-bundles-debuginfo
libwebkit2gtk3-lang
libjavascriptcoregtk-4_0-18-debuginfo
typelib-1_0-WebKit2-4_0
typelib-1_0-JavaScriptCore-4_0
webkit2gtk-4_0-injected-bundles
libwebkit2gtk-4_0-37
libjavascriptcoregtk-4_0-18
libwebkit2gtk-4_0-37-debuginfo
typelib-1_0-WebKit2WebExtension-4_0
webkit2gtk3-debugsource
libwebkitgtk-6_0-4
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
libjavascriptcoregtk-6_0-1
webkit2gtk-4_1-injected-bundles-debuginfo
webkit2gtk3-soup2-devel
webkit2gtk-4_1-injected-bundles
libwebkitgtk-6_0-4-debuginfo
typelib-1_0-WebKit2WebExtension-4_1
typelib-1_0-JavaScriptCore-4_1
libjavascriptcoregtk-4_1-0-debuginfo
libwebkit2gtk-4_0-37-32bit
libjavascriptcoregtk-4_1-0-32bit
libwebkit2gtk-4_0-37-32bit-debuginfo
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
webkit-jsc-4.1
webkit-jsc-4.1-debuginfo
libwebkit2gtk-4_1-0-32bit
libjavascriptcoregtk-4_0-18-32bit-debuginfo
libjavascriptcoregtk-4_1-0-32bit-debuginfo
libwebkit2gtk-4_1-0-32bit-debuginfo
libwebkit2gtk-4_1-0-64bit-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
webkit2gtk3-minibrowser-debuginfo
webkit2gtk4-devel
typelib-1_0-WebKit-6_0
typelib-1_0-WebKitWebProcessExtension-6_0
typelib-1_0-JavaScriptCore-6_0
webkit2gtk4-minibrowser
webkit-jsc-6.0
webkit2gtk3-soup2-minibrowser
webkitgtk-6_0-injected-bundles-debuginfo

Install updates from vendor's website.

WebKitGTK+ - update to 2.50.3
WPE WebKit - update to 2.50.3
webkit2gtk (Ubuntu package) - addressed in versions 2.50.3-0ubuntu0.22.04.1, 2.50.3-0ubuntu0.24.04.1, 2.50.3-0ubuntu0.25.04.1, 2.50.3-0ubuntu0.25.10.1
webkit2gtk4.1 - addressed in versions 2.50.3-1, 2.50.5-1
javascriptcoregtk6.0-devel - addressed in versions 2.50.3-1, 2.50.5-1
webkitgtk6.0-doc - addressed in versions 2.50.3-1, 2.50.5-1
javascriptcoregtk6.0 - addressed in versions 2.50.3-1, 2.50.5-1
webkit2gtk4.1-doc - addressed in versions 2.50.3-1, 2.50.5-1
webkitgtk6.0-devel - addressed in versions 2.50.3-1, 2.50.5-1
webkitgtk6.0 - addressed in versions 2.50.3-1, 2.50.5-1
webkit2gtk4.1-devel - addressed in versions 2.50.3-1, 2.50.5-1
javascriptcoregtk4.1-devel - addressed in versions 2.50.3-1, 2.50.5-1
javascriptcoregtk4.1 - addressed in versions 2.50.3-1, 2.50.5-1
webkit2gtk3 (Red Hat package) - addressed in versions 2.50.3-1.el8_10, 2.50.3-1.el9_2, 2.50.3-1.el9_4, 2.50.3-1.el9_6, 2.50.3-1.el9_7, 2.50.3-2.el8_2, 2.50.3-2.el8_4, 2.50.3-2.el8_6, 2.50.3-2.el8_8
webkit2gtk (Debian package) - addressed in versions 2.50.3-1~deb12u1, 2.50.3-1~deb13u1
webkit2gtk3-jsc - update to 2.50.3-1.0.1
webkit2gtk3-devel - update to 2.50.3-1.0.1
webkit2gtk3 - update to 2.50.3-1.0.1
webkit2gtk3-jsc-devel - update to 2.50.3-1.0.1
webkitgtk4 (Red Hat package) - update to 2.50.3-2.el7_9
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
libwebkit2gtk3-lang - update to 2.50.3-4.47.1
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
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
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
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
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
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
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
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
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
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
libwebkitgtk-6_0-4 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
WebKitGTK-6.0-lang - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
WebKitGTK-4.1-lang - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
WebKitGTK-4.0-lang - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libwebkit2gtk-4_1-0 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libwebkit2gtk-4_1-0-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_1-0 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
webkit2gtk3-soup2-debugsource - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
webkit2gtk4-debugsource - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libjavascriptcoregtk-6_0-1-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
typelib-1_0-WebKit2-4_1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
webkitgtk-6_0-injected-bundles - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libjavascriptcoregtk-6_0-1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
webkit2gtk-4_1-injected-bundles-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
webkit2gtk3-soup2-devel - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
webkit2gtk-4_1-injected-bundles - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libwebkitgtk-6_0-4-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
typelib-1_0-WebKit2WebExtension-4_1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
typelib-1_0-JavaScriptCore-4_1 - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_1-0-debuginfo - addressed in versions 2.50.3-150400.4.130.4, 2.50.4-150600.12.54.1
libwebkit2gtk-4_0-37-32bit - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_1-0-32bit - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_0-37-32bit-debuginfo - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_0-18-32bit - update to 2.50.4-150600.12.54.1
webkit2gtk3-minibrowser - update to 2.50.4-150600.12.54.1
webkit2gtk4-minibrowser-debuginfo - update to 2.50.4-150600.12.54.1
webkit2gtk3-soup2-minibrowser-debuginfo - update to 2.50.4-150600.12.54.1
webkit-jsc-6.0-debuginfo - update to 2.50.4-150600.12.54.1
webkit-jsc-4 - update to 2.50.4-150600.12.54.1
webkit-jsc-4-debuginfo - update to 2.50.4-150600.12.54.1
webkit-jsc-4.1 - update to 2.50.4-150600.12.54.1
webkit-jsc-4.1-debuginfo - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_1-0-32bit - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_0-18-32bit-debuginfo - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_1-0-32bit-debuginfo - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_1-0-32bit-debuginfo - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_1-0-64bit-debuginfo - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_1-0-64bit - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_0-37-64bit - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_1-0-64bit - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_0-18-64bit-debuginfo - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_0-18-64bit - update to 2.50.4-150600.12.54.1
libjavascriptcoregtk-4_1-0-64bit-debuginfo - update to 2.50.4-150600.12.54.1
libwebkit2gtk-4_0-37-64bit-debuginfo - update to 2.50.4-150600.12.54.1
webkit2gtk3-minibrowser-debuginfo - update to 2.50.4-150600.12.54.1
webkit2gtk4-devel - update to 2.50.4-150600.12.54.1
typelib-1_0-WebKit-6_0 - update to 2.50.4-150600.12.54.1
typelib-1_0-WebKitWebProcessExtension-6_0 - update to 2.50.4-150600.12.54.1
typelib-1_0-JavaScriptCore-6_0 - update to 2.50.4-150600.12.54.1
webkit2gtk4-minibrowser - update to 2.50.4-150600.12.54.1
webkit-jsc-6.0 - update to 2.50.4-150600.12.54.1
webkit2gtk3-soup2-minibrowser - update to 2.50.4-150600.12.54.1
webkitgtk-6_0-injected-bundles-debuginfo - update to 2.50.4-150600.12.54.1

• https://webkitgtk.org/security/WSA-2025-0009.html

• Multiple vulnerabilities in WebKitGTK+ and WPE WebKit
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Debian update for webkit2gtk
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Anolis OS update for webkit2gtk3
• SUSE update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• SUSE update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for webkitgtk4
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• SUSE update for webkit2gtk3
• Ubuntu update for webkit2gtk
• Anolis OS update for webkitgtk
• Anolis OS update for webkitgtk