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Full vulnerability report · 2020
CVE-2020-3897High confidence

A remote attacker may be able to cause arbitrary code execution

Apple · iOS

8.8HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 4.66% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Apple iOS and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  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 30 daysRemediation target: Within 180 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.

9 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.2.28.0-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian trixietrixie · sourcewpewebkitVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · sourcewpewebkitVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourcewpewebkitVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourcewebkit2gtkVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourcewpewebkitVendor fix publishedDebian records a fixed source-package version for this release.2.28.0-1Debian Security Tracker ↗Source updated 23 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 23 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2020-3897 · CSAF 2.0 · revision 21 · interimSUSE Product Security TeamCVE-2020-3897
54 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • libjavascriptcoregtk-4_0-18 as component of SUSE CaaS Platform 4.0
  • libwebkit2gtk-4_0-37 as component of SUSE CaaS Platform 4.0
  • libwebkit2gtk3-lang as component of SUSE CaaS Platform 4.0
  • typelib-1_0-JavaScriptCore-4_0 as component of SUSE CaaS Platform 4.0
  • typelib-1_0-WebKit2-4_0 as component of SUSE CaaS Platform 4.0
  • typelib-1_0-WebKit2WebExtension-4_0 as component of SUSE CaaS Platform 4.0
  • webkit2gtk-4_0-injected-bundles as component of SUSE CaaS Platform 4.0
  • webkit2gtk3 as component of SUSE CaaS Platform 4.0
  • webkit2gtk3-devel as component of SUSE CaaS Platform 4.0
  • libjavascriptcoregtk-4_0-18 as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • libwebkit2gtk-4_0-37 as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • libwebkit2gtk3-lang as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
Summary
A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, watchOS 6.2, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. A remote attacker may be able to cause arbitrary code execution.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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-2020-25162

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, watchOS 6.2, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. A remote attacker may be able to cause arbitrary code execution.

What

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, watchOS 6.2, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. A remote attacker may be able to cause 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 was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, watchOS 6.2, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. A remote attacker may be able to cause 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.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

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-843
A

Official authority intelligence

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

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 ↗
Cyber Security Agency of Singapore · English · CSA-SB-20200408Security Bulletin 08 Apr 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 08 Apr 2020, published on 8 April 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-170Multiples vulnérabilités dans les produits Apple

.cve.org/CVERecord?id=CVE-2020-3887 Référence CVE CVE-2020-3888 https://www.cve.org/CVERecord?id=CVE-2020-3888 Référence CVE CVE-2020-3889 https://www.cve.org/CVERecord?id=CVE-2020-3889 Référence CVE CVE-2020-3890 https://www.cve.org/CVERecord?id=CVE-2020-3890 Référence CVE CVE-2020-3891 https://www.cve.org/CVERecord?id=CVE-2020-3891 Référence CVE CVE-2020-3892 https://www.cve.org/CVERecord?id=CVE-2020-3892 Référence CVE CVE-2020-3893 https://www.cve.org/CVERecord?id=CVE-2020-3893 Référence CVE CVE-2020-3894 https://www.cve.org/CVERecord?id=CVE-2020-3894 Référence CVE CVE-2020-3895 https://www.cve.org/CVERecord?id=CVE-2020-3895 Référence CVE CVE-2020-3897 https://www.cve.org/CVERecord?id=CVE-2020-3897 Référence CVE CVE-2020-3899 https://www.cve.org/CVERecord?id=CVE-2020-3899 Référence CVE CVE-2020-3900 https://www.cve.org/CVERecord?id=CVE-2020-3900 Référence CVE CVE-2020-3901 https://www.cve.org/CVERecord?id=CVE-2020-3901 Référence CVE CVE-2020-3902 https://www.cve.org/CVERecord?id=CVE-2020-3902 Référence CVE CVE-2020-3903 https://www.cve.org/CVERecord?id=CVE-2020-3903 Référence CVE CVE-2020-3904 https://www.cve.org/CVERecord?id=CVE-2020-3904 Référence CVE CVE-2020-3905 https://www.cve.org/CVERecord?id=CVE-2020-3905 Référence CVE CVE-2020-3906 https://www.cve.org/CVERecord?id=CVE-2020-3906 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-171Multiples vulnérabilités dans Apple iCloud pour Windows

De multiples vulnérabilités ont été découvertes dans Apple iCloud pour Windows. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une atteinte à la confidentialité des données et une injection de code indirecte à distance (XSS).

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-003666複数の Apple 製品における型の取り違えの脆弱性

複数の Apple 製品には、メモリ処理に不備があるため、型の取り違えの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.
Patch available
Affected
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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.
Official vendor articles4 stored documents

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

04

Evidence and provenance

Published 1 Apr 2020 · Last source change 4 Aug 2024, 07:52 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 2026-08-14
European sourceENISA EUVD · EUVD-2020-25162
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates ↗
  1. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    SUSE Product Security Team ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Remediation guidance recorded
ENISA EUVD · EUVD-2020-25162↗SUSE Product Security Team security advisory↗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-2020-3897 · cve.blacktree.nl