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Full vulnerability report · 2019
CVE-2019-8506High confidence

Apple Multiple Products Type Confusion Vulnerability

Apple · Multiple Products

8.8HighCVSS 3.1
Recommended action
Protect now

CISA confirms exploitation in the wild and lists 2022-05-25 as the remediation due date.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 4 May 2022

Evidence used

  • CISA confirms exploitation in the wild.
  • EPSS is 16.16% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Apple Multiple Products and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.24.1-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.24.1-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.24.1-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.24.1-1Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveqtwebkit-opensource-srcUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 6 Oct 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2019-17896

CISA KEV mirrored by ENISA

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.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 4 May 2022. Evidence sources: cisa_kev.
ENISA score
8.8 · CVSS 3.1
Advisory evidence
6 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_suse · SUSE-SU-2019:1137-1Security update for webkit2gtk3
  • csaf_redhat · RHSA-2020:4035Red Hat Security Advisory: webkitgtk4 security, bug fix, and enhancement update
  • csaf_suse · SUSE-SU-2019:1155-1Security update for webkit2gtk3
  • csaf_opensuse · openSUSE-SU-2019:1374-1Security update for webkit2gtk3
  • csaf_redhat · RHSA-2019:3553Red Hat Security Advisory: GNOME security, bug fix, and enhancement update
Recommended actionProtect now

CISA confirms exploitation in the wild and lists 2022-05-25 as the remediation due date.

Fix not verified
01

What, why and how

A type confusion issue affecting multiple Apple products allows processing of maliciously crafted web content, leading to arbitrary code execution.

What

A type confusion issue affecting multiple Apple products allows processing of maliciously crafted web content, leading to arbitrary code execution.

Why

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

What

A type confusion issue affecting multiple Apple products allows processing of maliciously crafted web content, leading to arbitrary code execution.

Why

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2022-05-04.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Access of Resource Using Incompatible Type ('Type Confusion') → execute code or commands in the affected security context
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-843 ↗

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion'). The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
NetworkUnauthenticatedRemote code executionCWE-843CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2019-17896Known-exploited evidence recorded

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.

Official EUVD record ↗
BSI · German · WID-SEC-2024-1479Red Hat Enterprise Linux/WebKitGTK: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Benutzerrechten

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in WebKitGTK ausnutzen, um beliebigen Programmcode mit Benutzerrechten auszuführen.

Official advisory ↗
CERT-FR · French · CERTFR-2019-AVI-129Multiples vulnérabilités dans les produits Apple

.cve.org/CVERecord?id=CVE-2019-7284 Référence CVE CVE-2019-7285 https://www.cve.org/CVERecord?id=CVE-2019-7285 Référence CVE CVE-2019-7286 https://www.cve.org/CVERecord?id=CVE-2019-7286 Référence CVE CVE-2019-7292 https://www.cve.org/CVERecord?id=CVE-2019-7292 Référence CVE CVE-2019-7293 https://www.cve.org/CVERecord?id=CVE-2019-7293 Référence CVE CVE-2019-8502 https://www.cve.org/CVERecord?id=CVE-2019-8502 Référence CVE CVE-2019-8503 https://www.cve.org/CVERecord?id=CVE-2019-8503 Référence CVE CVE-2019-8504 https://www.cve.org/CVERecord?id=CVE-2019-8504 Référence CVE CVE-2019-8505 https://www.cve.org/CVERecord?id=CVE-2019-8505 Référence CVE CVE-2019-8506 https://www.cve.org/CVERecord?id=CVE-2019-8506 Référence CVE CVE-2019-8507 https://www.cve.org/CVERecord?id=CVE-2019-8507 Référence CVE CVE-2019-8508 https://www.cve.org/CVERecord?id=CVE-2019-8508 Référence CVE CVE-2019-8510 https://www.cve.org/CVERecord?id=CVE-2019-8510 Référence CVE CVE-2019-8511 https://www.cve.org/CVERecord?id=CVE-2019-8511 Référence CVE CVE-2019-8512 https://www.cve.org/CVERecord?id=CVE-2019-8512 Référence CVE CVE-2019-8513 https://www.cve.org/CVERecord?id=CVE-2019-8513 Référence CVE CVE-2019-8514 https://www.cve.org/CVERecord?id=CVE-2019-8514 Référence CVE CVE-2019-8515 https://www.cve.org/CVERecord?id=CVE-2019-8515 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2019-016904アップルの iCloud 等複数ベンダの製品における型の取り違えに関する脆弱性

アップルの iCloud 等複数ベンダの製品には、型の取り違えに関する脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • iOS: unspecified < iOS 12.2
  • tvOS: unspecified < tvOS 12.2
  • watchOS: unspecified < watchOS 5.2
  • Safari: unspecified < Safari 12.1
  • iTunes for Windows: unspecified < iTunes 12.9.4 for Windows
  • iCloud for Windows: unspecified < iCloud for Windows 7.11
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 18 Dec 2019 · Last source change 21 Oct 2025, 23:35 UTC · CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2019-17896
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA known-exploited stateENISA EUVD now records this CVE in its known-exploited dataset.
    Before
    not listed in ENISA EUVD known-exploited dataset
    After
    listed in ENISA EUVD known-exploited dataset (EUVD-2019-17896)
    ENISA EUVD ↗
  2. ENISA EUVD mappingEUVD-2019-17896 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2019-17896"}
    ENISA EUVD ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    unspecified < iOS 12.2; unspecified < tvOS 12.2; unspecified < watchOS 5.2; unspecified < Safari 12.1; unspecified < iTunes 12.9.4 for Windows; unspecified < iCloud for Windows 7.11 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    iOS: unspecified < iOS 12.2; tvOS: unspecified < tvOS 12.2; watchOS: unspecified < watchOS 5.2; Safari: unspecified < Safari 12.1; iTunes for Windows: unspecified < iTunes 12.9.4 for Windows; iCloud for Windows: unspecified < iCloud for Windows 7.11 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  4. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: support.apple.com/HT209599; added vendor advisory: support.apple.com/HT209601; 4 further additions.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: support.apple.com/HT209599 · vendor advisory: support.apple.com/HT209601 · vendor advisory: support.apple.com/HT209602 · 3 more references
    support.apple.com ↗
  5. CVSS scoreCVSS scoring authority changed from CISA ADP to NIST NVD; the displayed base score remained 8.8.
    Before
    8.8 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
    After
    8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
    NIST NVD ↗
  6. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
ENISA EUVD · EUVD-2019-17896↗CISA KEV record↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2019-8506 · cve.blacktree.nl