Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Web content delivery is network-based (AV:N), exploitation complexity is low once content is visited (AC:L), no attacker privileges required (PR:N), user must open the page (UI:R), no inherent scope change without chaining (S:U), and memory corruption enables full triad compromise (C:H/I:H/A:H).
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory handling and result in memory corruption.
AnalysisAI
Use-after-free memory corruption in WebKitGTK exposes Red Hat Enterprise Linux 6 through 9 systems to potential arbitrary code execution when users process attacker-controlled web content. The flaw (CWE-416) stems from improper memory management in the web engine's content rendering pipeline, where a freed heap allocation is subsequently accessed, enabling heap corruption. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a user on an affected RHEL 6-9 system to actively process attacker-controlled web content using a WebKitGTK-based application (UI:R per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) reflects high severity with low exploitation complexity, but the UI:R requirement is the primary gating factor - the attacker must induce a user to process malicious web content rather than achieving exploitation passively. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers a domain and hosts a page containing crafted HTML, JavaScript, or media content engineered to trigger the use-after-free condition in WebKitGTK's rendering engine. A user on an affected RHEL system opens the URL in GNOME Web or another WebKitGTK-based application; the engine frees a heap object during content processing but retains a stale pointer to it, which is then accessed, corrupting heap metadata. … |
| Remediation | No vendor-released patch version has been independently confirmed from the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running WebKitGTK across RHEL 6, 7, 8, and 9 environments and map dependent applications to identify business-critical services. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-64858
GHSA-qcc7-6r53-qpph