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CVE-2025-66287

Good to know:

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Date: December 4, 2025

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

Severity Score

Related Resources (16)

https://webkitgtk.org/security/WSA-2025-0009.html
https://access.redhat.com/errata/RHSA-2025:22789
https://access.redhat.com/errata/RHSA-2025:23434
https://access.redhat.com/errata/RHSA-2025:23742
https://access.redhat.com/errata/RHSA-2025:23433
https://access.redhat.com/errata/RHSA-2025:23743
https://access.redhat.com/errata/RHSA-2025:23452
https://access.redhat.com/errata/RHSA-2025:23110
https://access.redhat.com/errata/RHSA-2025:23451
https://access.redhat.com/errata/RHSA-2025:23583
https://access.redhat.com/errata/RHSA-2025:23591
https://bugzilla.redhat.com/show_bug.cgi?id=2418857
https://access.redhat.com/errata/RHSA-2025:22790
https://access.redhat.com/security/cve/CVE-2025-66287
https://nvd.nist.gov/vuln/detail/CVE-2025-66287
https://www.mend.io/vulnerability-database/CVE-2025-66287

Severity Score

Weakness Type (CWE)

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

CWE-120

Top Fix

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Upgrade Version

Upgrade to version https://github.com/WebKit/WebKit.git - webkitgtk-2.50.3;https://github.com/WebKit/WebKit.git - webkitgtk-2.51.3;https://github.com/WebKit/WebKit.git - wpewebkit-2.50.3;https://github.com/WebKit/WebKit.git - wpewebkit-2.51.3

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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