Log in Start free

Vulnerability · Published Dec 4, 2025 · Assigned by redhat

CVE-2025-66287Webkitgtk: processing maliciously crafted web content may lead to an unexpected process crash

High 8.8

In plain English

A high-severity buffer overflow in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.5%top 56.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8webkit2gtk32.50.3-1.el8_10ALSA-2025:22789
AlmaLinux:9webkit2gtk32.50.3-1.el9_7ALSA-2025:22790
AlmaLinux:8webkit2gtk3-devel2.50.3-1.el8_10ALSA-2025:22789
AlmaLinux:9webkit2gtk3-devel2.50.3-1.el9_7ALSA-2025:22790
AlmaLinux:8webkit2gtk3-jsc2.50.3-1.el8_10ALSA-2025:22789
AlmaLinux:9webkit2gtk3-jsc2.50.3-1.el9_7ALSA-2025:22790
AlmaLinux:8webkit2gtk3-jsc-devel2.50.3-1.el8_10ALSA-2025:22789
AlmaLinux:9webkit2gtk3-jsc-devel2.50.3-1.el9_7ALSA-2025:22790
Debian:12webkit2gtk2.50.3-1~deb12u1DEBIAN-CVE-2025-66287
Debian:12webkit2gtk2.50.3-1~deb12u1DSA-6074-1
Debian:13webkit2gtk2.50.3-1~deb13u1DSA-6074-1
Debian:13webkit2gtk2.50.3-1~deb13u1DEBIAN-CVE-2025-66287
Debian:14webkit2gtk2.50.3-1DEBIAN-CVE-2025-66287
Debian:12wpewebkitno fix listedDEBIAN-CVE-2025-66287
Debian:13wpewebkitno fix listedDEBIAN-CVE-2025-66287
Debian:14wpewebkit2.50.3-1DEBIAN-CVE-2025-66287
Rocky Linux:8webkit2gtk30:2.50.3-1.el8_10RLSA-2025:22789
Rocky Linux:9webkit2gtk30:2.50.3-1.el9_7RLSA-2025:22790
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2025-66287
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2025-66287
Ubuntu:22.04:LTSwebkit2gtk2.50.3-0ubuntu0.22.04.1USN-7941-1
Ubuntu:22.04:LTSwebkit2gtk2.50.3-0ubuntu0.22.04.1UBUNTU-CVE-2025-66287
Ubuntu:24.04:LTSwebkit2gtk2.50.3-0ubuntu0.24.04.1UBUNTU-CVE-2025-66287
Ubuntu:24.04:LTSwebkit2gtk2.50.3-0ubuntu0.24.04.1USN-7941-1
Ubuntu:25.10webkit2gtk2.50.3-0ubuntu0.25.10.1USN-7941-1
Ubuntu:25.10webkit2gtk2.50.3-0ubuntu0.25.10.1UBUNTU-CVE-2025-66287
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2025-66287

Affected products (as reported)

VendorProductVersions
The WebKitGTK Team WebKitGTK 0 – before 2.50.3
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References