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Vulnerabilities/CVE-2019-8720Public Intelligence Dossier
Source: webkitgtk · Limited verification•Last verified: •Collection Degraded
CVE-2019-8720ListedHIGH (raw)CVSS 8.8CWE-119

A vulnerability was found in WebKit

Published: 07 Mar 2023•Last updated: 08 Oct 2026, 04:05 PM IST•Source identifier: secalert@redhat.com
Dossier completeness: source-provided sections 3 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Listed
Added23 May 2022
Due13 Jun 2022
RansomwareUnknown
CVSS score
8.8HIGH (raw)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Metric sourcenvd@nist.gov
EPSS probability
1.6%0.016
Percentile75th
Weakness type
CWE-119
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

A vulnerability was found in WebKit. The flaw is triggered when processing maliciously crafted web content that may lead to arbitrary code execution. Improved memory handling addresses the multiple memory corruption issues.

SOC priority

Immediate Attention

Actively exploited (source statement)

Yes

Publicly disclosed

Unknown

Risk basis: CISA KEV exploitation signal; SOC ecosystem technology relevance; HIGH severity; Source-confirmed exploitation or CISA KEV/ransomware metadata

Affected Products & Remediation

23 source-backed products
Affected products and versions (source)
  • webkitgtk webkitgtk · < 2.26.0 · NVD CPE · Source
  • wpewebkit wpe webkit · < 2.26.0 · NVD CPE · Source
  • redhat codeready linux builder · 8.0; eus 8.4; eus 8.6; for arm64 eus 8.0; for arm64 eus 8.4; for arm64 eus 8.6; for ibm z systems eus 8.0; for ibm z systems eus 8.4; for ibm z systems eus 8.6; for power little endian eus 8.0; for power little endian eus 8.4; for power little endian eus 8.6 · NVD CPE · Source
  • redhat codeready linux builder eus · 8.4; 8.6 · NVD CPE · Source
  • redhat codeready linux builder for arm64 eus · 8.0; 8.4; 8.6 · NVD CPE · Source
  • redhat codeready linux builder for ibm z systems eus · 8.0; 8.4; 8.6 · NVD CPE · Source
  • redhat codeready linux builder for power little endian eus · 8.0; 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux · 8.0; desktop 7.0; eus 8.4; eus 8.6; for arm64 eus 8.6; for ibm z systems 7.0; for ibm z systems 8.0; for ibm z systems eus 8.4; for ibm z systems eus 8.6; for power big endian 7.0; for power little endian 7.0; for power little endian 8.0; for power little endian eus 8.4; for power little endian eus 8.6; for scientific computing 7.0; server 7.0; server aus 8.4; server aus 8.6; server for power little endian update services for sap solutions 8.4; server for power little endian update services for sap solutions 8.6; server tus 8.4; server tus 8.6; server update services for sap solutions 8.4; server update services for sap solutions 8.6; workstation 7.0 · NVD CPE · Source
  • redhat enterprise linux desktop · 7.0 · NVD CPE · Source
  • redhat enterprise linux eus · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux for arm64 eus · 8.6 · NVD CPE · Source
  • redhat enterprise linux for ibm z systems · 7.0; 8.0; eus 8.4; eus 8.6 · NVD CPE · Source
  • redhat enterprise linux for ibm z systems eus · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux for power big endian · 7.0 · NVD CPE · Source
  • redhat enterprise linux for power little endian · 7.0; 8.0; eus 8.4; eus 8.6 · NVD CPE · Source
  • redhat enterprise linux for power little endian eus · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux for scientific computing · 7.0 · NVD CPE · Source
  • redhat enterprise linux server · 7.0; aus 8.4; aus 8.6; for power little endian update services for sap solutions 8.4; for power little endian update services for sap solutions 8.6; tus 8.4; tus 8.6; update services for sap solutions 8.4; update services for sap solutions 8.6 · NVD CPE · Source
  • redhat enterprise linux server aus · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux server for power little endian update services for sap solutions · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux server tus · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux server update services for sap solutions · 8.4; 8.6 · NVD CPE · Source
  • redhat enterprise linux workstation · 7.0 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

  • CISA KEV: Apply updates per vendor instructions.

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Listed
Exploited (source statement)
Yes
Publicly disclosed (source)
Unknown

CISA required action: Apply updates per vendor instructions.

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched kev-network-exposure (CVSS AV:N, CISA KEV Listed); user-interaction-client (CVSS AV:N, CVSS UI:R)

Exposure

  1. Identify assets with the exact CVE and confirm the affected product/version against the advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · KEV listing raises urgency, but inventory is needed to establish local exposure. · Rule kev-network-exposure
  2. Identify endpoints reporting this CVE, especially those used for email and web browsing.Telemetry: DeviceTvmSoftwareVulnerabilities · A network vector that needs user interaction points at user-facing client software. · Rule user-interaction-client

Exploitation evidence

  1. Review relevant edge or application access logs for unusual requests around the advisory window.Telemetry: CommonSecurityLog · Log review is a hunting hypothesis; KEV listing alone does not show local exploitation. · Rule kev-network-exposure
Show more (2)

Exploitation evidence

  1. Review unusual child processes started by the affected client application on affected endpoints.Telemetry: DeviceProcessEvents · Hunting hypothesis from the CVSS vector; it does not show that exploitation occurred. · Rule user-interaction-client

Response

  1. Recheck the affected assets after the source-stated mitigation or update is applied.Telemetry: DeviceTvmSoftwareVulnerabilities · A follow-up inventory check verifies local remediation. · Rule kev-network-exposure

CISA KEV Record

Catalog entry
23 May 2022
Required action due
13 Jun 2022
Known ransomware use
Unknown

Apply updates per vendor instructions.

Change History & Source Data

— No recorded material change

CNA / source
secalert@redhat.com
Record status · verification
UPDATED · CISA KEV confirmed
CPE
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*, cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_eus:8.4:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_eus:8.6:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.0:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.4:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.6:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:8.0:*:*:*:*:*:*:*, cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*

Evidence & Provenance

4 public sources
CISA KEV CatalogAdded 2022-05-23webkitgtk.orgSource recordnvd.nist.govSource recordbugzilla.redhat.comSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2019-8720
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2019-8720
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2019-8720"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.