CVE-2019-8506

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 18%CVSS: 8.8Exploit: cisa kev · ssvc active · Exploit-DB (verified) · epss top5pct · public exploitExposed: 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
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
18%
EPSS %ILE
97%
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) @ cosmic2026-07-26ubuntu
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 68× in last 7d / 399× 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 807 total refreshes for this CVE.

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