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Review reviewHigh

CVE-2025-66287

The WebKitGTK Team WebKitGTK, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8

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

CVSS
8.8
EPSS
0.46%
37.7% percentile
CISA KEV
Not listed
Published
2025.12.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.46%
Technical severityCVSS 8.8

Vulnerability overview

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

Affected product and versions

Product
The WebKitGTK Team WebKitGTK, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8
Affected versions
See the vendor advisory and NVD configuration data
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that The WebKitGTK Team WebKitGTK, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-120
CVE-2025-66287 — The WebKitGTK Team WebKitGTK, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8 | SECUFOCUS NOW