CASCACascade Atlas

Evidence dossier

CVE-2019-8506

CVE-2019-8506

70.5–86.8Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Dec 18, 2019
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS18.11%

2026-07-18 · v2026.06.15 · percentile 96.9%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

appleoriginal assertion
container

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.

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

CISA KEVoriginal assertion
observed_exploitation

Apple Multiple Products Type Confusion Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.181080000000; percentile 0.968760000000

Applicability

Cited product scope

Trace impact →
AppleiCloud for Windows
[{"status": "affected", "version": "unspecified", "lessThan": "iCloud for Windows 7.11", "versionType": "custom"}]unknown
AppleiOS
[{"status": "affected", "version": "unspecified", "lessThan": "iOS 12.2", "versionType": "custom"}]unknown
AppleiTunes for Windows
[{"status": "affected", "version": "unspecified", "lessThan": "iTunes 12.9.4 for Windows", "versionType": "custom"}]unknown
AppleSafari
[{"status": "affected", "version": "unspecified", "lessThan": "Safari 12.1", "versionType": "custom"}]unknown
AppletvOS
[{"status": "affected", "version": "unspecified", "lessThan": "tvOS 12.2", "versionType": "custom"}]unknown
ApplewatchOS
[{"status": "affected", "version": "unspecified", "lessThan": "watchOS 5.2", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:*; end excluding 7.11supported
Unknown vendorUnknown product
cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:*; end excluding 12.9.4supported
Unknown vendorUnknown product
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*; end excluding 12.1supported
Unknown vendorUnknown product
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*; end excluding 12.2supported
Unknown vendorUnknown product
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*; end excluding 12.2supported
Unknown vendorUnknown product
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*; end excluding 5.2supported
Unknown vendorUnknown product
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.