CVE-2025-66287

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

State: Published
Severity: 8.8 High
Published: Dec 4, 2025
Updated: Jun 29, 2026
Reserved: Nov 26, 2025

Description

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

Scores

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

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
WebKitGTKThe WebKitGTK Team	before 2.50.3Affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:2.50.3-2.el7_9 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:2.50.3-1.el8_10 and laterNot affected
Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat	0:2.50.3-2.el8_2 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:2.50.3-2.el8_4 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:2.50.3-2.el8_4 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:2.50.3-2.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat	0:2.50.3-2.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat	0:2.50.3-2.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:2.50.3-2.el8_8 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:2.50.3-2.el8_8 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.50.3-1.el9_7 and laterNot affected
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat	0:2.50.3-1.el9_0 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:2.50.3-1.el9_2 and laterNot affected
Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat	0:2.50.3-1.el9_4 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:2.50.3-1.el9_6 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat

References

RHSA-2025:22789vendor-advisory
RHSA-2025:22790vendor-advisory
RHSA-2025:23110vendor-advisory
RHSA-2025:23433vendor-advisory
RHSA-2025:23434vendor-advisory
RHSA-2025:23451vendor-advisory
RHSA-2025:23452vendor-advisory
RHSA-2025:23583vendor-advisory
RHSA-2025:23591vendor-advisory
RHSA-2025:23742vendor-advisory
RHSA-2025:23743vendor-advisory
https://access.redhat.com/security/cve/CVE-2025-66287vdb-entry
RHBZ#2418857issue-tracking
https://webkitgtk.org/security/WSA-2025-0009.html

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