CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CVE-2025-6644 (GCVE-0-2025-6644)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:43 – Updated: 2025-06-26 13:37
VLAI
Title
PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability
Summary
PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26536.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
zdi
References
Impacted products
Date Public
2025-06-25 21:32
Show details on NVD website
To clipboard 

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CVE-2025-6645 (GCVE-0-2025-6645)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:43 – Updated: 2025-06-26 13:40
VLAI
Title
PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability
Summary
PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26642.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
zdi
References
Impacted products
Date Public
2025-06-25 21:33
Show details on NVD website
To clipboard 

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CVE-2025-6646 (GCVE-0-2025-6646)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:42 – Updated: 2025-06-26 13:45
VLAI
Title
PDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure Vulnerability
Summary
PDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. 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 U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26643.
Severity
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
zdi
References
Impacted products
Date Public
2025-06-25 21:33
Show details on NVD website
To clipboard 

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CVE-2025-66493 (GCVE-0-2025-66493)

Vulnerability from cvelistv5 – Published: 2025-12-19 07:07 – Updated: 2025-12-19 14:51
VLAI
Title
Foxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability
Summary
A use-after-free vulnerability exists in the AcroForm handling of Foxit PDF Reader and Foxit PDF Editor before 2025.2.1,14.0.1 and 13.2.1 on Windows . When opening a PDF containing specially crafted JavaScript, a pointer to memory that has already been freed may be accessed or dereferenced, potentially allowing a remote attacker to execute arbitrary code.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2025.2.1 and earlier
Affected: Versions 14.0.1 and earlier
Affected: Versions 13.2.1 and earlier
Create a notification for this product.
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2025.2.1 and earlier
Affected: Versions 14.0.1 and earlier
Affected: Versions 13.2.1 and earlier
Create a notification for this product.
Date Public
2025-12-18 16:00
Credits
Anonymous working with Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2025-66494 (GCVE-0-2025-66494)

Vulnerability from cvelistv5 – Published: 2025-12-19 07:08 – Updated: 2025-12-19 14:49
VLAI
Title
Foxit PDF Reader PDF File Parsing Use-After-Free Remote Code Execution Vulnerability
Summary
A use-after-free vulnerability exists in the PDF file parsing of Foxit PDF Reader before 2025.2.1, 14.0.1, and 13.2.1 on Windows. A PDF object managed by multiple parent objects could be freed while still being referenced, potentially allowing a remote attacker to execute arbitrary code.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2025.2.1 and earlier
Affected: Versions 14.0.1 and earlier
Affected: Versions 13.2.1 and eariler
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2025.2.1 and earlier
Affected: Versions 14.0.1 and earlier
Affected: Versions 13.2.1 and eariler
Create a notification for this product.
Credits
Anonymous working with Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2025-66495 (GCVE-0-2025-66495)

Vulnerability from cvelistv5 – Published: 2025-12-19 07:09 – Updated: 2025-12-19 14:45
VLAI
Title
Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability
Summary
A use-after-free vulnerability exists in the annotation handling of Foxit PDF Reader before 2025.2.1, 14.0.1, and 13.2.1 on Windows and MacOS. When opening a PDF containing specially crafted JavaScript, a pointer to memory that has already been freed may be accessed or dereferenced, potentially allowing a remote attacker to execute arbitrary code.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Foxit Software Inc. Foxit PDF Reader Affected: Versions 2025.2.1 and earlier
Affected: Versions 14.0.1 and earlier
Affected: Versions 13.2.1 and eariler
Create a notification for this product.
Foxit Software Inc. Foxit PDF Editor Affected: Versions 2025.2.1 and earlier
Affected: Versions 14.0.1 and earlier
Affected: Versions 13.2.1 and eariler
Create a notification for this product.
Credits
KX.H working with Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2025-66585 (GCVE-0-2025-66585)

Vulnerability from cvelistv5 – Published: 2025-12-11 20:56 – Updated: 2026-06-04 20:28
VLAI
Title
Use After Free vulnerability in AzeoTech DAQFactory
Summary
In AzeoTech DAQFactory release 20.7 (Build 2555), a use after free vulnerability can be exploited to cause memory corruption while parsing specially crafted .ctl files. This could allow an attacker to execute code in the context of the current process.
Severity
7.3 (High)
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
AzeoTech DAQFactory Affected: 0 , ≤ Release 20.7 (Build 2555) (custom)
Unaffected: Release 21.1
Create a notification for this product.
Credits
Andrea Micalizzi of Trend Zero Day Initiative Michael Heinzl
Show details on NVD website
To clipboard 

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CVE-2025-6661 (GCVE-0-2025-6661)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:39 – Updated: 2025-06-26 14:15
VLAI
Title
PDF-XChange Editor App Object Use-After-Free Remote Code Execution Vulnerability
Summary
PDF-XChange Editor App Object Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 handling of App objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26823.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
zdi
References
Impacted products
Date Public
2025-06-25 21:36
Show details on NVD website
To clipboard 

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          "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-446/"
        },
        {
          "name": "vendor-provided URL",
          "tags": [
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          "url": "https://www.pdf-xchange.com/support/security-bulletins.html"
        }
      ],
      "source": {
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        "value": "Suyue Guo from UCSB Seclab"
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      "title": "PDF-XChange Editor App Object Use-After-Free Remote Code Execution Vulnerability"
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CVE-2025-66627 (GCVE-0-2025-66627)

Vulnerability from cvelistv5 – Published: 2025-12-09 02:52 – Updated: 2025-12-09 15:21
VLAI
Title
Wasmi's Linear Memory has a Critical Use After Free Vulnerability
Summary
Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible.
Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
wasmi-labs wasmi Affected: >= 0.41.0, < 0.41.2
Affected: >= 0.42.0, < 0.47.1
Affected: >= 0.50.0, < 0.51.3
Affected: >= 1.0.0, < 1.0.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-6706 (GCVE-0-2025-6706)

Vulnerability from cvelistv5 – Published: 2025-06-26 14:00 – Updated: 2025-06-26 17:40
VLAI
Title
Running certain aggregation operations with the SBE engine may lead to unexpected behavior on MongoDB Server
Summary
An authenticated user may trigger a use after free that may result in MongoDB Server crash and other unexpected behavior, even if the user does not have authorization to shut down a server. The crash is triggered on affected versions by issuing an aggregation framework operation using a specific combination of rarely-used aggregation pipeline expressions. This issue affects MongoDB Server v6.0 version prior to 6.0.21, MongoDB Server v7.0 version prior to 7.0.17 and MongoDB Server v8.0 version prior to 8.0.4 when the SBE engine is enabled.
Severity
5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
MongoDB Inc MongoDB Server Affected: 6.0 , < 6.0.21 (custom)
Affected: 7.0 , < 7.0.17 (custom)
Affected: 8.0 , < 8.0.4 (custom)
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 Create a notification for this product.
Date Public
2025-06-26 13:59
Show details on NVD website
To clipboard 

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Mitigation

Phase: Architecture and Design

Strategy: Language Selection

Description:

  • Choose a language that provides automatic memory management.
Mitigation

Phase: Implementation

Strategy: Attack Surface Reduction

Description:

  • When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.

No CAPEC attack patterns related to this CWE.

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