Public vulnerability disclosure
CVE-2025-66287
Webkitgtk: processing maliciously crafted web content may lead to an unexpected process crash
publishedCWE-120
A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.
Technical severity8.8 highCVSS 3.1 · CNA: redhat
Published2025-12-04Source updated 2026-11-04
Collected2026-11-042 attributed sources
Fixes and workarounds
Workaround
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| WebKitGTK The WebKitGTK Team webkitgtk
https://github.com/WebKit/WebKit |
≥ 0; < 2.50.3 (affected, semver)
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat webkitgtk4
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el7_9; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-1.el8_10; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_4; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_4; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_8; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-2.el8_8; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-1.el9_7; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-1.el9_0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-1.el9_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-1.el9_4; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.6 Extended Update Support Red Hat webkit2gtk3
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:2.50.3-1.el9_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat webkitgtk
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unknown |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat webkitgtk3
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.8 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2025:22789CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:22790CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23110CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23433CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23434CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23451CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23452CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23583CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23591CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23742CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:23743CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2025-66287CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2418857CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://webkitgtk.org/security/WSA-2025-0009.htmlCNA: redhat
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