Common Weakness Enumeration

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.

CVE-2026-5496 (GCVE-0-2026-5496)

Vulnerability from cvelistv5 – Published: 2026-04-11 00:13 – Updated: 2026-04-13 18:25
VLAI
Title
Labcenter Electronics Proteus PDSPRJ File Parsing Type Confusion Remote Code Execution Vulnerability
Summary
Labcenter Electronics Proteus PDSPRJ File Parsing Type Confusion Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Labcenter Electronics Proteus. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDSPRJ files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25717.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
zdi
References
Impacted products
Date Public
2026-04-06 14:14
Show details on NVD website

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CVE-2026-5946 (GCVE-0-2026-5946)

Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-05-20 13:40
VLAI
Title
Invalid handling of CLASS != IN
Summary
Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-20 - Improper Input Validation
  • CWE-125 - Out-of-bounds Read
  • CWE-617 - Reachable Assertion
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
isc
Impacted products
Vendor Product Version
ISC BIND 9 Affected: 9.11.0 , ≤ 9.16.50 (custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom)
Affected: 9.20.0 , ≤ 9.20.22 (custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom)
Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom)
Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom)
Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom)
Create a notification for this product.
Date Public
2026-05-20 00:00
Credits
ISC would like to thank Mcsky23 for bringing this vulnerability to our attention.
Show details on NVD website

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CVE-2026-6047 (GCVE-0-2026-6047)

Vulnerability from cvelistv5 – Published: 2026-06-15 16:22 – Updated: 2026-06-15 18:11
VLAI
Title
Heap buffer overflow in OOXML text box element import
Summary
LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-787 - Out-of-bounds Write
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
Impacted products
Vendor Product Version
The Document Foundation LibreOffice Affected: 25.8 , < < 25.8.7 (25.8 series)
Affected: 26.2 , < < 26.2.3 (26.2 series)
Create a notification for this product.
Date Public
2026-06-15 00:00
Credits
Anthropic (automated discovery using Claude) Trail of Bits (triage and validation)
Show details on NVD website

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CVE-2026-6210 (GCVE-0-2026-6210)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:59 – Updated: 2026-05-06 13:11
VLAI
Title
Type confusion and heap-buffer-overflow in Qt SVG marker handling causing application crash
Summary
A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a <line> element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker, followed by an endless recursion that bypasses the marker recursion guard through incorrect virtual dispatch. The result is an application crash (denial of service). This issue affects Qt SVG:  from 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
  • CWE-122 - Heap-based Buffer Overflow
Assigner
Impacted products
Vendor Product Version
The Qt Company Qt Affected: 6.7.0 , < 6.8.8 (python)
Affected: 6.9.0 , < 6.11.1 (python)
Create a notification for this product.
Show details on NVD website

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CVE-2026-6732 (GCVE-0-2026-6732)

Vulnerability from cvelistv5 – Published: 2026-04-23 22:19 – Updated: 2026-04-30 17:11
VLAI
Title
Libxml2: libxml2: denial of service via crafted xsd-validated document
Summary
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
Impacted products
Date Public
2026-04-16 00:00
Credits
Red Hat would like to thank Ariel Schon for reporting this issue.
Show details on NVD website

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CVE-2026-8358 (GCVE-0-2026-8358)

Vulnerability from cvelistv5 – Published: 2026-06-15 16:24 – Updated: 2026-06-16 19:27
VLAI
Title
Heap buffer overflow in spreadsheet tracked-changes import
Summary
LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
  • CWE-787 - Out-of-bounds Write
Assigner
Impacted products
Vendor Product Version
The Document Foundation LibreOffice Affected: 25.8 , < < 25.8.7 (26.2 series)
Affected: 26.2 , < < 26.2.4 (26.2 series)
Create a notification for this product.
Date Public
2026-06-15 00:00
Credits
Anthropic (automated discovery using Claude) Arthur Chan of Ada Logics (validation and reporting)
Show details on NVD website

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CVE-2026-8499 (GCVE-0-2026-8499)

Vulnerability from cvelistv5 – Published: 2026-06-09 03:41 – Updated: 2026-06-09 16:01
VLAI
Title
Helpfulcrowd Product Reviews <= 1.2.9 - Inccorect Authorization via Type Juggling in 'token' Parameter to Arbitrary Settings Update
Summary
The Helpfulcrowd Product Reviews plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in versions up to, and including, 1.2.9. This is due to the `helpfulcrowd_validate_token()` function using a loose comparison operator (`!=`) instead of a strict comparison (`!==`) when validating the `token` parameter, while the corresponding REST route `/wp-json/helpfulcrowd/v1/update-settings` is registered with a `permission_callback` of `__return_true`, making it reachable by unauthenticated users; submitting a JSON boolean `true` as the `token` value causes PHP's loose comparison to evaluate as equal to the non-empty base64-encoded secret string, bypassing the check entirely. This makes it possible for unauthenticated attackers to invoke `helpfulcrowd_settings_endpoint()` and write arbitrary attacker-controlled key-value pairs directly into the `helpfulcrowd_options` WordPress database option via `update_option()` without any sanitization or allowlist filtering, enabling full unauthenticated modification of the plugin's stored configuration.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
Impacted products
Vendor Product Version
helpfulcrowd Helpfulcrowd Product Reviews Affected: 0 , ≤ 1.2.9 (semver)
Create a notification for this product.
Credits
Abhirup Konwar
Show details on NVD website

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CVE-2026-9334 (GCVE-0-2026-9334)

Vulnerability from cvelistv5 – Published: 2026-06-03 00:15 – Updated: 2026-06-03 17:29
VLAI
Title
Cpanel::JSON::XS versions before 4.41 for Perl allow type confusion via duplicate object keys when dupkeys_as_arrayref is enabled
Summary
Cpanel::JSON::XS versions before 4.41 for Perl allow type confusion via duplicate object keys when dupkeys_as_arrayref is enabled. decode_hv() collapses duplicate object keys into an array reference under dupkeys_as_arrayref. The branch reached for a duplicate key tests `SvTYPE (old_value) != SVt_RV && SvTYPE (SvRV (old_value)) != SVt_PVAV`, which evaluates SvRV(old_value) before establishing that old_value is a reference. When the existing value is a plain scalar rather than an array reference, a non-reference scalar is dereferenced as a reference. A caller decoding untrusted JSON with dupkeys_as_arrayref enabled is crashed, and the incompatible access follows a pointer taken from attacker controlled scalar contents.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
Impacted products
Vendor Product Version
RURBAN Cpanel::JSON::XS Affected: 0 , < 4.41 (custom)
Create a notification for this product.
Show details on NVD website

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          "time": "2026-05-27T00:00:00.000Z",
          "value": "Version 4.41 released with fix."
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          "time": "2026-05-28T00:00:00.000Z",
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No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.

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