CVE record · CVE-2025-66287

Webkitgtk: processing maliciously crafted web content may lead to an unexpected process crash

CVSS 8.8 HighEPSS 0.0051 · 43rd percentile

Published by the CVE Program (CNA: redhat) at 4 Dec 2025, 16:48 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
The WebKitGTK Team	WebKitGTK Package name: webkitgtk https://github.com/WebKit/WebKit	affected before 2.50.3 semver Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support Package name: webkitgtk4 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el7_9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-1.el8_10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-2.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-1.el9_7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-1.el9_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-1.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-1.el9_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support Package name: webkit2gtk3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.50.3-1.el9_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: webkitgtk https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown
Red Hat	Red Hat Enterprise Linux 7 Package name: webkitgtk3 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2025-66287
CNA: redhat
Weakness (CWE): CWE-120
Tags: WebKitGTK
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Memory corruption
Published: 4 Dec 2025
Updated: 4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0051, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

4 Dec 2025, 16:48 UTC Confirmed by the CVE List
4 Dec 2025, 17:15 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2025:22789 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:22790 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23110 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23433 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23434 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23451 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23452 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23583 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23591 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23742 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:23743 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2025-66287 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2418857 issue-trackingredhat
webkitgtk.org/security/WSA-2025-0009.html

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.