Common Weakness Enumeration

CWE-125

Allowed

Out-of-bounds Read

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product reads data past the end, or before the beginning, of the intended buffer.

11273 vulnerabilities reference this CWE, most recent first.

CVE-2025-7009 (GCVE-0-2025-7009)

Vulnerability from cvelistv5 – Published: 2026-06-12 22:10 – Updated: 2026-06-15 17:11
VLAI
Title
Avast antivirus heap buffer OOB read when scanning a malformed PE file
Summary
Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25021310. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
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
GEN
References
Impacted products
Date Public
2025-05-26 11:28
Credits
Mike Zhang, an independent security researcher
Show details on NVD website
To clipboard 

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CVE-2025-7008 (GCVE-0-2025-7008)

Vulnerability from cvelistv5 – Published: 2026-06-12 22:09 – Updated: 2026-06-15 17:11
VLAI
Title
Avast antivirus heap buffer OOB read when scanning a malformed PE file
Summary
Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Windows PE file with .NET metadata may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25021310. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
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
GEN
References
Impacted products
Date Public
2025-05-26 11:28
Credits
Mike Zhang, an independent security researcher
Show details on NVD website
To clipboard 

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CVE-2025-7003 (GCVE-0-2025-7003)

Vulnerability from cvelistv5 – Published: 2026-06-12 22:02 – Updated: 2026-06-15 17:14
VLAI
Title
Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 1)
Summary
Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.56.
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
GEN
References
Impacted products
Vendor Product Version
Gen Digital Avira Antivirus Affected: 0 , < 8.3.70.56 (custom)
Create a notification for this product.
Date Public
2025-06-13 09:30
Credits
Mike Zhang, an independent security researcher
Show details on NVD website
To clipboard 

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CVE-2025-7002 (GCVE-0-2025-7002)

Vulnerability from cvelistv5 – Published: 2026-06-12 21:59 – Updated: 2026-06-15 17:13
VLAI
Title
Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 2)
Summary
Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.68.
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
GEN
References
Impacted products
Vendor Product Version
Gen Digital Avira Antivirus Affected: 0 , < 8.3.70.68 (custom)
Create a notification for this product.
Date Public
2025-05-26 11:28
Credits
Mike Zhang, an independent security researcher
Show details on NVD website
To clipboard 

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CVE-2025-6662 (GCVE-0-2025-6662)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:39 – Updated: 2025-06-26 14:17
VLAI
Title
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Summary
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated 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-26985.
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 21:36
Show details on NVD website
To clipboard 

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CVE-2025-6658 (GCVE-0-2025-6658)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:41 – Updated: 2025-06-30 20:22
VLAI
Title
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Summary
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26733.
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 21:36
Show details on NVD website
To clipboard 

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CVE-2025-6657 (GCVE-0-2025-6657)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:41 – Updated: 2025-06-30 20:22
VLAI
Title
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Summary
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26732.
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 21:35
Show details on NVD website
To clipboard 

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CVE-2025-6656 (GCVE-0-2025-6656)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:41 – Updated: 2025-06-30 20:22
VLAI
Title
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Summary
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated 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-26731.
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 21:35
Show details on NVD website
To clipboard 

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CVE-2025-6655 (GCVE-0-2025-6655)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:41 – Updated: 2025-06-26 14:03
VLAI
Title
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Summary
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated 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-26730.
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 21:35
Show details on NVD website
To clipboard 

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CVE-2025-6653 (GCVE-0-2025-6653)

Vulnerability from cvelistv5 – Published: 2025-06-25 21:42 – Updated: 2025-06-26 13:54
VLAI
Title
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Summary
PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read 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 PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26726.
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 21:35
Show details on NVD website
To clipboard 

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Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.
Mitigation
Architecture and Design

Strategy: Language Selection

Use a language that provides appropriate memory abstractions.

CAPEC-540: Overread Buffers

An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

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