CVE-2019-8720: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-30T15:58:52.948Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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.

• Context preserved from previous revision: 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. Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

Technical Details

• CVE: CVE-2019-8720
• KEV date added: 2022-05-23
• KEV due date: 2022-06-13
• NVD published: 2023-03-07
• NVD modified: 2025-11-18
• MITRE modified: 2025-10-21
• CVSS base score: 8.8
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• CVSS exploitability score: 2.8
• CVSS impact score: 5.9
• Attack vector: Network
• Attack complexity: Low
• Privileges required: None
• User interaction: Required
• Scope: Unchanged
• Confidentiality impact: High
• Integrity impact: High
• Availability impact: High

Versions and Products Impacted

• webkitgtk / webkitgtk (versions: < 2.26.0)
• wpewebkit / wpe webkit (versions: < 2.26.0)
• redhat / codeready linux builder (versions: 8.0)
• redhat / codeready linux builder eus (versions: 8.4)
• redhat / codeready linux builder eus (versions: 8.6)
• redhat / codeready linux builder for arm64 eus (versions: 8.0)
• redhat / codeready linux builder for arm64 eus (versions: 8.4)
• redhat / codeready linux builder for arm64 eus (versions: 8.6)
• redhat / codeready linux builder for ibm z systems eus (versions: 8.0)
• redhat / codeready linux builder for ibm z systems eus (versions: 8.4)
• redhat / codeready linux builder for ibm z systems eus (versions: 8.6)
• redhat / codeready linux builder for power little endian eus (versions: 8.0)
• redhat / codeready linux builder for power little endian eus (versions: 8.4)
• redhat / codeready linux builder for power little endian eus (versions: 8.6)
• redhat / enterprise linux (versions: 8.0)
• redhat / enterprise linux desktop (versions: 7.0)
• redhat / enterprise linux eus (versions: 8.4)
• redhat / enterprise linux eus (versions: 8.6)
• redhat / enterprise linux for arm64 eus (versions: 8.6)
• redhat / enterprise linux for ibm z systems (versions: 7.0)

Weakness Classification

• CWE-119

Repositories for Lab Validation (Public Examples)

• Ostorlab/KEV | stars: 608 | updated: 2026-03-23 | https://github.com/Ostorlab/KEV
  Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
• sslab-gatech/freedom | stars: 157 | updated: 2026-02-23 | https://github.com/sslab-gatech/freedom
  Notes: A DOM fuzzer

People and Organizations Mentioned

• redhat
• WebKitGTK
• Ostorlab
• sslab-gatech

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Use webkitgtk / webkitgtk (versions: < 2.26.0) in isolated VM snapshots (vulnerable vs patched) and compare process tree telemetry before/after updates.
4. Validate command-execution prevention policies (AppLocker/WDAC/EDR) with harmless test binaries only.
5. Create SIEM detections for suspicious parent-child chains, encoded command usage, and abnormal service creation.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2019-8720
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2019-8720
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV notes: https://nvd.nist.gov/vuln/detail/CVE-2019-8720
• https://bugzilla.redhat.com/show_bug.cgi?id=1876611
• https://webkitgtk.org/security/WSA-2019-0005.html
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8720
• Repository example: https://github.com/Ostorlab/KEV
• Repository example: https://github.com/sslab-gatech/freedom

This content is for defensive security training and authorized validation only.