CVE-2019-8506

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-04), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 18%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
—
EPSS
96.9%
KEV
⚠ Exploited

Published

December 18, 2019

Last Modified

October 23, 2025

Advisory Details (6)

Auto-updated Jun 2, 2026
No patch confirmed yet.
generic

About the security content of Safari 12.1 - Apple Support

https://support.apple.com/HT209603
generic

About the security content of watchOS 5.2 - Apple Support

https://support.apple.com/HT209602
generic

About the security content of tvOS 12.2 - Apple Support

https://support.apple.com/HT209601
generic

About the security content of iOS 12.2 - Apple Support

https://support.apple.com/HT209599
generic

About the security content of iCloud for Windows 7.11 - Apple Support

https://support.apple.com/HT209605
generic

About the security content of iTunes 12.9.4 for Windows - Apple Support

https://support.apple.com/HT209604

Vendor Advisories for CVE-2019-8506(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwebkit2gtk-driver (2.24.1-0ubuntu0.18.10.2) @ cosmic2026-07-22ubuntu
redhatwebkitgtk4-0:2.28.2-2.el72020-09-29redhat
redhatwebkit2gtk3-0:2.24.3-1.el82019-11-05redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 107× in last 7d / 438× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 781 total refreshes for this CVE.

  1. 2026-07-22 23:19 UTCVendor advisory
  2. 2026-07-22 23:18 UTCGHSA enrichment
  3. 2026-07-22 22:29 UTCEG score recompute
  4. 2026-07-22 19:40 UTCCISA KEV update
  5. 2026-07-22 19:31 UTCVendor advisory
  6. 2026-07-22 19:31 UTCGHSA enrichment
  7. 2026-07-22 15:44 UTCEG score recompute
  8. 2026-07-22 15:44 UTCVendor advisory
  9. 2026-07-22 15:44 UTCGHSA enrichment
  10. 2026-07-22 14:05 UTCEPSS rescore
  11. 2026-07-22 11:54 UTCVendor advisory
  12. 2026-07-22 11:54 UTCGHSA enrichment
  13. 2026-07-22 08:07 UTCVendor advisory
  14. 2026-07-22 08:07 UTCGHSA enrichment
  15. 2026-07-22 04:18 UTCVendor advisory
  16. 2026-07-22 04:18 UTCGHSA enrichment
  17. 2026-07-22 00:24 UTCVendor advisory
  18. 2026-07-22 00:24 UTCGHSA enrichment
  19. 2026-07-21 18:31 UTCEG score recompute
  20. 2026-07-21 18:31 UTCVendor advisory
  21. 2026-07-21 18:30 UTCGHSA enrichment
  22. 2026-07-21 15:22 UTCEPSS rescore
  23. 2026-07-21 15:22 UTCEPSS rescore
  24. 2026-07-21 14:43 UTCVendor advisory
  25. 2026-07-21 14:42 UTCGHSA enrichment
Show 75 more
  1. 2026-07-21 14:37 UTCCISA KEV update
  2. 2026-07-21 10:54 UTCVendor advisory
  3. 2026-07-21 10:54 UTCGHSA enrichment
  4. 2026-07-21 07:03 UTCVendor advisory
  5. 2026-07-21 07:03 UTCGHSA enrichment
  6. 2026-07-21 03:16 UTCVendor advisory
  7. 2026-07-21 03:16 UTCGHSA enrichment
  8. 2026-07-20 23:28 UTCVendor advisory
  9. 2026-07-20 23:28 UTCGHSA enrichment
  10. 2026-07-20 19:41 UTCEG score recompute
  11. 2026-07-20 19:41 UTCVendor advisory
  12. 2026-07-20 19:41 UTCGHSA enrichment
  13. 2026-07-20 17:04 UTCEPSS rescore
  14. 2026-07-20 15:54 UTCVendor advisory
  15. 2026-07-20 15:54 UTCGHSA enrichment
  16. 2026-07-20 12:07 UTCVendor advisory
  17. 2026-07-20 12:06 UTCGHSA enrichment
  18. 2026-07-20 08:19 UTCVendor advisory
  19. 2026-07-20 08:19 UTCGHSA enrichment
  20. 2026-07-20 04:32 UTCVendor advisory
  21. 2026-07-20 04:32 UTCGHSA enrichment
  22. 2026-07-20 00:43 UTCVendor advisory
  23. 2026-07-20 00:43 UTCGHSA enrichment
  24. 2026-07-19 20:56 UTCVendor advisory
  25. 2026-07-19 20:56 UTCGHSA enrichment
  26. 2026-07-19 17:08 UTCVendor advisory
  27. 2026-07-19 17:08 UTCGHSA enrichment
  28. 2026-07-19 13:20 UTCVendor advisory
  29. 2026-07-19 13:20 UTCGHSA enrichment
  30. 2026-07-19 09:33 UTCVendor advisory
  31. 2026-07-19 09:33 UTCGHSA enrichment
  32. 2026-07-19 05:45 UTCEG score recompute
  33. 2026-07-19 05:45 UTCVendor advisory
  34. 2026-07-19 05:45 UTCGHSA enrichment
  35. 2026-07-19 02:26 UTCEPSS rescore
  36. 2026-07-19 02:26 UTCEPSS rescore
  37. 2026-07-19 01:57 UTCVendor advisory
  38. 2026-07-19 01:57 UTCGHSA enrichment
  39. 2026-07-18 22:08 UTCVendor advisory
  40. 2026-07-18 22:08 UTCGHSA enrichment
  41. 2026-07-18 18:20 UTCVendor advisory
  42. 2026-07-18 18:20 UTCGHSA enrichment
  43. 2026-07-18 14:32 UTCVendor advisory
  44. 2026-07-18 14:32 UTCGHSA enrichment
  45. 2026-07-18 10:45 UTCEG score recompute
  46. 2026-07-18 10:45 UTCVendor advisory
  47. 2026-07-18 10:45 UTCGHSA enrichment
  48. 2026-07-18 10:02 UTCEPSS rescore
  49. 2026-07-18 06:58 UTCVendor advisory
  50. 2026-07-18 06:58 UTCGHSA enrichment
  51. 2026-07-18 03:10 UTCVendor advisory
  52. 2026-07-18 03:10 UTCGHSA enrichment
  53. 2026-07-17 23:22 UTCVendor advisory
  54. 2026-07-17 23:22 UTCGHSA enrichment
  55. 2026-07-17 19:35 UTCVendor advisory
  56. 2026-07-17 19:35 UTCGHSA enrichment
  57. 2026-07-17 15:47 UTCVendor advisory
  58. 2026-07-17 15:47 UTCGHSA enrichment
  59. 2026-07-17 12:00 UTCVendor advisory
  60. 2026-07-17 11:59 UTCGHSA enrichment
  61. 2026-07-17 08:11 UTCEG score recompute
  62. 2026-07-17 08:11 UTCVendor advisory
  63. 2026-07-17 08:11 UTCGHSA enrichment
  64. 2026-07-17 04:24 UTCVendor advisory
  65. 2026-07-17 04:23 UTCGHSA enrichment
  66. 2026-07-17 00:36 UTCVendor advisory
  67. 2026-07-17 00:36 UTCGHSA enrichment
  68. 2026-07-16 20:48 UTCVendor advisory
  69. 2026-07-16 20:48 UTCGHSA enrichment
  70. 2026-07-16 17:04 UTCCISA KEV update
  71. 2026-07-16 17:00 UTCVendor advisory
  72. 2026-07-16 17:00 UTCGHSA enrichment
  73. 2026-07-16 16:59 UTCEPSS rescore
  74. 2026-07-16 16:59 UTCEPSS rescore
  75. 2026-07-16 13:12 UTCVendor advisory

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-46647✓ verified
    First seen Apr 3, 2019

    WebKit JavaScriptCore - 'createRegExpMatchesArray' Type Confusion

    Open source ↗

Frequently asked(6)

What is CVE-2019-8506?
CVE-2019-8506 is a high vulnerability published on December 18, 2019. A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
When was CVE-2019-8506 disclosed?
CVE-2019-8506 was first published in the National Vulnerability Database on December 18, 2019, with the most recent update on October 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-8506 actively exploited?
Yes. CISA added CVE-2019-8506 to the Known Exploited Vulnerabilities catalog on May 4, 2022, affecting Apple Multiple Products. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-8506?
CVE-2019-8506 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2019-8506?
CVE-2019-8506 affects Apple Multiple Products. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2019-8506?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-8506, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2019-8506

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