HighCVE-2026-6732

    iOS and iPadOS: Access of Resource Using Incompatible Type ('Type Confusion') (CVE-2026-6732)

    Published Sources: BSI

    What is affected, what to do

    A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference.

    Update Red Hat Hardened Images to version 2.15.3-0.1.hum1.

    Affected
    • Red Hat Hardened Images lt *..2.15.3-0.1.hum1
    Fixed in
    • Red Hat Hardened Images 2.15.3-0.1.hum1

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    7.5

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: BSI

    0.6 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 50.3

    Show all metrics
    Severity
    High
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    59.22 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    7.5 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    7.5
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.6 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    50.3
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CISA assessment (SSVC)
    Exploitation: none known · not automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 24 April 2026
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-843

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.

    Source: BSI WID Portal

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    AppleiOS and iPadOS
    • < 18.7.9
    • < 26.5
    • 18.7.9
    • 26.5
    ApplemacOS
    • < 26.5
    • 26.5
    AppleSafari
    • < 26.5
    • 26.5
    AppletvOS
    • < 26.5
    • 26.5
    ApplevisionOS
    • < 26.5
    • 26.5
    ApplewatchOS
    • < 26.5
    • 26.5
    GStreamerGood Plug-ins
    • < 1.28.2
    • 1.28.2
    Oracle CorporationOracle GraalVM Enterprise Edition
    • 21.3.19.1.1
    • —
    Oracle CorporationOracle GraalVM for JDK
    • 17.0.20.1
    • 21.0.12.1
    • —
    • —
    Oracle CorporationOracle Java SE
    • 11.0.32.1
    • 17.0.20.1
    • 21.0.12.1
    • 25.0.4.1
    • 26.0.2
    • 27
    • 8u503
    • 8u503-perf
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    • —
    Oracle CorporationOracle JavaFX
    • 21.0.12
    • 25.0.4
    • 27
    • —
    • —
    • —
    Red HatRed Hat Enterprise Linux 10
    • —
    • —
    Red HatRed Hat Enterprise Linux 6
    • —
    • —
    Red HatRed Hat Enterprise Linux 7
    • —
    • —
    Red HatRed Hat Enterprise Linux 8
    • —
    • —
    Red HatRed Hat Enterprise Linux 9
    • —
    • —
    Red HatRed Hat Hardened Images
    • < 2.15.3-0.1.hum1
    • 2.15.3-0.1.hum1
    Red HatRed Hat JBoss Core Services
    • —
    • —
    Red HatRed Hat OpenShift Container Platform 4
    • —
    • —
    freedesktopgst-plugins-good
    • < 1.28.2
    • 1.28.2
    ibmvios
    • 4.1.0 – < 4.1.1.30
    • 4.1.2.0
    • 4.1.1.30
    • —
    redhathardened_images
    • —
    • —
    redhatjboss_core_services
    • —
    • —
    redhatopenshift_container_platform
    • 4.0
    • —
    xmlsoftlibxml2
    • 2.13.0 – < 2.15.3
    • 2.15.3
    Hitachi EnergyRTU500
    • < 13.9.1
    • 13.9.1
    MeinbergLANTIME
    • < V7.10.014
    • V7.10.014
    Open SourceGStreamer core
    • < 1.28.3
    • 1.28.3
    Open SourceGStreamer gst-plugins-bad
    • < 1.28.3
    • 1.28.3
    Open SourceGStreamer gst-plugins-good
    • < 1.28.3
    • 1.28.3
    Open Sourcelibxml2
    • ≥ 2.13.0
    • —
    Open SourceWebKitGTK
    • < 2.52.4
    • 2.52.4
    OracleGraalVM
    • 17.0.20.1
    • 21.0.12.1
    • 21.3.19.1.1
    • —
    • —
    • —
    OracleJava SE
    • 11.0.32.1
    • —
    From bundled advisories, not CVE-specific (4)

    Product list of a bundled advisory that does not state which product this CVE affects.

    Products from bundled advisories
    Affected versionsFixed in
    AppleiOS
    • < 18.7.9
    • < 26.5
    • 18.7.9
    • 26.5
    AppleiPadOS
    • < 18.7.9
    • < 26.5
    • 18.7.9
    • 26.5

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxredhatenterprise_linux10.0
    Linuxredhatenterprise_linux8.0
    Linuxredhatenterprise_linux7.0
    Linuxredhatenterprise_linux6.0
    Linuxredhatenterprise_linux9.0
    Linuxdebiangst-plugins-good1.0trixie
    Linuxdebianopenjdk-17bookworm
    Linuxdebianopenjdk-21trixie
    Linuxdebianopenjdk-25trixie
    Linuxdebianwebkit2gtktrixie
    macOSapplemacos—
    Mobileappleiphone_os—
    Otheribmaix7.3.4
    Otheribmaix—
    Otherappleipados—
    Otherappletvos—
    Otherapplevisionos—
    Otherapplewatchos—

    Weakness classes (CWE)

    • CWE-843Access of Resource Using Incompatible Type ('Type Confusion')

      Base

      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.

      Entry at MITRE CWE-843

    References & sources

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedRed Hat

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/6xxx/CVE-2026-6732.json">CVE-2026-6732</a>

      Source identifier: secalert@redhat.com

    2. Record modifiedRed Hat

      Show 16 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/6xxx/CVE-2026-6732.json">CVE-2026-6732</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:11503
      Referenceadded
      —
      https://access.redhat.com/security/cve/CVE-2026-6732
      Referenceadded
      —
      https://bugzilla.redhat.com/show_bug.cgi?id=2461300
      Referenceadded
      —
      https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097
      Referenceadded
      —
      https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:11503
      —
      Referenceremoved
      https://access.redhat.com/security/cve/CVE-2026-6732
      —
      Referenceremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2461300
      —
      Referenceremoved
      https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097
      —
      Referenceremoved
      https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411
      —
      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2026:11503 Types: Third Party Advisory
      —
      Reference typeremoved
      https://access.redhat.com/security/cve/CVE-2026-6732 Types: Third Party Advisory
      —
      Reference typeremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2461300 Types: Issue Tracking, Third Party Advisory
      —
      Reference typeremoved
      https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097 Types: Exploit, Issue Tracking, Third Party Advisory
      —
      Reference typeremoved
      https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411 Types: Issue Tracking, Third Party Advisory
      —

      Source identifier: secalert@redhat.com

    3. Record modifiedRed Hat

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 (+5)
      Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 (+5)

      Source identifier: secalert@redhat.com

    4. NVD analysis modifiedNVD

      Newly listed as affected:
      • IBM VIOS (4.1.0 – before 4.1.1.30; 1 individual version)
      • IBM AIX (7.2.5 – before 7.2.5.12; 7.3.2 – before 7.3.3.3; 1 individual version)
      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Product configurationadded
      —
      OR *cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:* versions from (including) 4.1.0 up to (excluding) 4.1.1.30 *cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:* *cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:* versions from (including) 7.2.5 up to (excluding) 7.2.5.12 *cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:* versions from (including) 7.3.2 up to (excluding) 7.3.3.3 *cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*

      Source identifier: nvd@nist.gov

    One NVD translation into another language is hidden.

    Linked CVEs

    Linked CVEs
    MediumCVE-2026-91487Oracle Java SE: security vulnerability4.8—
    HighCVE-2026-91484Oracle Java SE: security vulnerability7.5—
    LowCVE-2026-91477Oracle JavaFX: security vulnerability3.1—
    MediumCVE-2026-91464Oracle Java SE: security vulnerability5.3—
    MediumCVE-2026-91463Oracle Java SE: security vulnerability5.3—
    MediumCVE-2026-91462Oracle Java SE: security vulnerability5.9—
    LowCVE-2026-91461Oracle Java SE: security vulnerability3.7—
    MediumCVE-2026-91453Oracle Java SE: Improper Access Control5.3—
    MediumCVE-2026-91452Oracle Java SE: Improper Access Control5.3—
    MediumCVE-2026-91451Oracle Java SE: Improper Access Control5.3—
    MediumCVE-2026-91418Oracle: Uncontrolled Resource Consumption5.3—
    MediumCVE-2026-91417Oracle Java SE: Uncontrolled Resource Consumption5.3—
    HighCVE-2026-91415Oracle Java SE: security vulnerability7.0—
    MediumCVE-2026-91411Oracle Java SE: security vulnerability6.5—
    MediumCVE-2026-91410Oracle Java SE: Uncontrolled Resource Consumption5.3—
    LowCVE-2026-91409Oracle Java SE: Denial of Service3.7—
    LowCVE-2026-91402Oracle Java SE: security vulnerability3.1—
    LowCVE-2026-91400Oracle Java SE: Uncontrolled Resource Consumption3.1—
    MediumCVE-2026-91398Oracle Java SE: Improper Access Control6.8—
    LowCVE-2026-91397Oracle Java SE: Improper Access Control3.6—
    MediumCVE-2026-91396Oracle Java SE: Improper Access Control6.5—
    MediumCVE-2026-91395Oracle Java SE: Improper Access Control6.5—
    MediumCVE-2026-91394Oracle Java SE: Exposure of Sensitive Information to an Unauthorized Actor5.9—
    MediumCVE-2026-91385Oracle Java SE: Use After Free5.4—
    Show 31 more CVEs
    Linked CVEs
    MediumCVE-2026-91382Oracle Java SE: Improper Access Control6.5—
    LowCVE-2026-91381Oracle Java SE: Improper Access Control3.7—
    MediumCVE-2026-91380Oracle Java SE: Improper Access Control4.0—
    MediumCVE-2026-91379Oracle Java SE: Use After Free4.7—
    MediumCVE-2026-91375Oracle Java SE: Incorrect Authorization4.7—
    MediumCVE-2026-91374Oracle Java SE: Improper Access Control4.8—
    MediumCVE-2026-91373Oracle Java SE: Uncontrolled Resource Consumption5.3—
    LowCVE-2026-91335Oracle Java SE: security vulnerability2.6—
    LowCVE-2026-91334Oracle Java SE: security vulnerability3.7—
    LowCVE-2026-91333Oracle Java SE: security vulnerability3.7—
    MediumCVE-2026-91332Oracle Java SE: Improper Access Control5.3—
    LowCVE-2026-87367Oracle Java SE: security vulnerability3.7—
    MediumCVE-2026-87294Oracle Java SE: security vulnerability6.5—
    MediumCVE-2026-87293Oracle Java SE: security vulnerability5.4—
    LowCVE-2026-87292Oracle Java SE: security vulnerability3.7—
    MediumCVE-2026-87291Oracle Java SE: security vulnerability5.3—
    MediumCVE-2026-87290Oracle Java SE: security vulnerability5.9—
    LowCVE-2026-87255Oracle Java SE: security vulnerability3.7—
    MediumCVE-2026-83400Oracle Java SE: Uncontrolled Resource Consumption5.3—
    MediumCVE-2026-83395Oracle Java SE: Improper Access Control6.5—
    MediumCVE-2026-83387Oracle Java SE: security vulnerability5.9—
    MediumCVE-2026-83381Oracle Java SE: security vulnerability4.8—
    MediumCVE-2026-83380Oracle Java SE: security vulnerability5.3—
    MediumCVE-2026-83378Oracle Java SE: security vulnerability4.8—
    LowCVE-2026-83376Oracle Java SE: security vulnerability3.7—
    MediumCVE-2026-83374Oracle Java SE: security vulnerability5.9—
    HighCVE-2026-6732Libxml2: libxml2: denial of service via crafted xsd-validated document7.5—
    CriticalCVE-2026-46470GStreamer Good Plug-ins: Divide By Zero9.1—
    HighCVE-2026-43660Apple Safari: Protection Mechanism Failure7.5—
    MediumCVE-2026-101737Oracle Java SE: Improper Access Control5.9—
    MediumCVE-2026-101516Oracle Java SE: security vulnerability6.5—
    Embed badge

    Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.

    Badge preview for CVE-2026-6732
    <a href="https://intel.neosec.eu/en/cve/CVE-2026-6732"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-6732.svg?lang=en" alt="CVE-2026-6732 – NEOSEC Intel" height="20"></a>