Common Weakness Enumeration

CWE-190

Allowed

Integer Overflow or Wraparound

Abstraction: Base · Status: Stable

API response cwe.mitre.org

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

4346 vulnerabilities reference this CWE, most recent first.

CVE-2026-102805 (GCVE-0-2026-102805)

Vulnerability from cvelistv5 – Published: 2026-09-30 00:15 – Updated: 2026-09-30 00:15
VLAI
Title
Nothings stb Image Encoding stb_image_write.h stbi_write_tga_core integer overflow
Summary
A flaw has been found in Nothings stb up to 1.16. This affects the function stbi_write_png_to_mem/stbi_write_jpg_core/stbi_write_tga_core in the library stb_image_write.h of the component Image Encoding. Executing a manipulation can lead to integer overflow. The attack can be executed remotely. The exploit has been published and may be used.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version
Nothings stb Affected: 1.0
Affected: 1.1
Affected: 1.2
Affected: 1.3
Affected: 1.4
Affected: 1.5
Affected: 1.6
Affected: 1.7
Affected: 1.8
Affected: 1.9
Affected: 1.10
Affected: 1.11
Affected: 1.12
Affected: 1.13
Affected: 1.14
Affected: 1.15
Affected: 1.16
    cpe:2.3:a:nothings:stb:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
JerryGW (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-102804 (GCVE-0-2026-102804)

Vulnerability from cvelistv5 – Published: 2026-09-30 00:00 – Updated: 2026-09-30 00:00
VLAI
Title
Nothings stb stb_hexwave.h hexwave_init integer overflow
Summary
A vulnerability was detected in Nothings stb up to 2c980bb59875b0d32144a71867fbdebb2f77cd20. The impacted element is the function hexwave_init in the library stb_hexwave.h. Performing a manipulation of the argument width/oversample results in integer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version
Nothings stb Affected: 2c980bb59875b0d32144a71867fbdebb2f77cd20
    cpe:2.3:a:nothings:stb:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
JerryGW (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-102633 (GCVE-0-2026-102633)

Vulnerability from cvelistv5 – Published: 2026-09-29 16:04 – Updated: 2026-09-29 16:52
VLAI
Title
libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc
Summary
libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial of service.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 16:52 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
libexpat libexpat Affected: 2.7.2 , ≤ 2.8.5 (semver)
    cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-25 00:00
Credits
Filippo Tedeschi Matthew Fernandez Filippo Tedeschi
Show details on NVD website
To clipboard 

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CVE-2026-102621 (GCVE-0-2026-102621)

Vulnerability from cvelistv5 – Published: 2026-09-29 21:30 – Updated: 2026-09-29 21:30 X_Open Source
VLAI
Title
Freedesktop Poppler SplashClip.cc clipToPath integer overflow
Summary
A vulnerability was identified in Freedesktop Poppler up to 26.08.0. Affected is the function SplashClip::clipToPath of the file splash/SplashClip.cc. Such manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 26.09.0 is able to address this issue. The name of the patch is 323c91036d99926a8b90dc14329f7b40aece22f8. It is recommended to upgrade the affected component.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version
Freedesktop Poppler Affected: 26.08
Unaffected: 26.09.0
    cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
r1ck99 (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-102620 (GCVE-0-2026-102620)

Vulnerability from cvelistv5 – Published: 2026-09-29 20:30 – Updated: 2026-09-29 20:30 X_Open Source
VLAI
Title
Freedesktop Poppler FoFiTrueType.cc cvtSfnts integer overflow
Summary
A vulnerability was determined in Freedesktop Poppler 26.06.0/26.07.0/26.08.0. This impacts the function FoFiTrueType::cvtSfnts of the file fofi/FoFiTrueType.cc. This manipulation causes integer overflow. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. Patch name: 245d3c6823377755f2c1d5fdddd010279c6ed94d. It is suggested to install a patch to address this issue.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version
Freedesktop Poppler Affected: 26.06.0
Affected: 26.07.0
Affected: 26.08.0
    cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
r1ck99 (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-102510 (GCVE-0-2026-102510)

Vulnerability from cvelistv5 – Published: 2026-09-30 08:01 – Updated: 2026-09-30 08:01
VLAI
Title
Apache PLC4X: Go binding: unbounded allocation and framing failures on wire-controlled lengths
Summary
Integer Overflow, Improper Validation of Array Index, Uncontrolled Recursion and Memory Allocation with Excessive Size Value in the Go implementation of Apache PLC4X (PLC4Go) allow a malicious device, or an attacker able to inject network traffic, to crash or exhaust the memory of the client application, causing a denial of service. The individual defects are: - Generated parsers pre-allocate arrays with the element count claimed on the wire (0.13.0 through 0.13.1). - Transport read helpers allocate buffers of the size claimed on the wire without an upper bound. - ADS and KNXnet/IP response handling indexes into received data without checking its length, causing a panic. - ADS and EIP frame-length handling accepts, or arithmetically wraps to, a length of zero, breaking message framing. - Recursive protocol types are parsed without a nesting-depth limit. The same defect in the Java implementation is covered by CVE-2026-102509 https://cveprocess.apache.org/cve5/CVE-2026-102509 . Additionally, length and position arithmetic in generated serializers was performed in 16-bit integers. If an application forwards attacker-influenced payloads larger than 8 KB, the length field wraps, and the remainder of the payload may be interpreted by the receiving device (for example, an ADS PLC) as additional, independent protocol messages. This issue affects Apache PLC4X: from 0.11.0 before 1.0.0. PLC4Go is consumed as the Go module github.com/apache/plc4x/plc4go; versions refer to the corresponding Apache PLC4X releases. Users are recommended to upgrade to version 1.0.0, which fixes the issue.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value. This covers the array pre-allocation (f017) and the transport read buffers (f018)
  • CWE-190 - Integer Overflow or Wraparound. This covers the uint16 length and position wraps (f009) and the EIP packet size wrapping to 0 (f014)
  • CWE-129 - Improper Validation of Array Index. This covers the ADS and KNXnet/IP index panics (f013, f015)
  • CWE-674 - Uncontrolled Recursion. This covers the Go part of f045
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache PLC4X Affected: 0.11.0 , < 1.0.0 (semver)
Unaffected: 1.0.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
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              "value": "\u003cdiv\u003e\u003cpre\u003eInteger Overflow, Improper Validation of Array Index, Uncontrolled Recursion and Memory Allocation with Excessive Size Value in the Go implementation of Apache PLC4X (PLC4Go) allow a malicious device, or an attacker able to inject network traffic, to crash or exhaust the memory of the client application,\u003cbr\u003ecausing a denial of service.\u003cbr\u003e\u003cbr\u003eThe individual defects are:\u003cbr\u003e- Generated parsers pre-allocate arrays with the element count claimed on the wire (0.13.0 through 0.13.1).\u003cbr\u003e- Transport read helpers allocate buffers of the size claimed on the wire without an upper bound.\u003cbr\u003e- ADS and KNXnet/IP response handling indexes into received data without checking its length, causing a panic.\u003cbr\u003e- ADS and EIP frame-length handling accepts, or arithmetically wraps to, a length of zero, breaking message framing.\u003cbr\u003e- Recursive protocol types are parsed without a nesting-depth limit. The same defect in the Java implementation is covered by \u003ca href=\"https://cveprocess.apache.org/cve5/CVE-2026-102509\"\u003eCVE-2026-102509\u003c/a\u003e.\u003cbr\u003e\u003cbr\u003eAdditionally, length and position arithmetic in generated serializers was performed in 16-bit integers. If an application forwards attacker-influenced payloads larger than 8 KB, the length field wraps, and the remainder of the payload may be interpreted by the receiving device (for example, an ADS PLC) as \u003cbr\u003eadditional, independent protocol messages.\u003cbr\u003e\u003cbr\u003eThis issue affects Apache PLC4X: from 0.11.0 before 1.0.0. PLC4Go is consumed as the Go module github.com/apache/plc4x/plc4go; versions refer to the corresponding Apache PLC4X releases.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 1.0.0, which fixes the issue.\u003c/pre\u003e\u003c/div\u003e"
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            "exploitMaturity": "NOT_DEFINED",
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
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CVE-2026-101279 (GCVE-0-2026-101279)

Vulnerability from cvelistv5 – Published: 2026-09-29 00:15 – Updated: 2026-09-29 10:48
VLAI
Title
Trusted Domain Project OpenDMARC opendmarc_policy.c integer overflow
Summary
A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 10:47 UTC
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/411036 vdb-entrytechnical-description
https://vuldb.com/vuln/411036/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-101279 third-party-advisory
https://vuldb.com/submit/918280 third-party-advisory
https://xuyongzhe-vt.github.io/share/dmarc-pct-in… exploit
Impacted products
Vendor Product Version
Trusted Domain Project OpenDMARC Affected: 1.4.0
Affected: 1.4.1
Affected: 1.4.2
    cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
yongzhe_xu (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-100208 (GCVE-0-2026-100208)

Vulnerability from cvelistv5 – Published: 2026-09-25 19:39 – Updated: 2026-09-29 20:22
VLAI
Title
Microsoft Office Outlook Remote Code Execution Vulnerability
Summary
Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Date Public
2026-09-25 14:00
Show details on NVD website
To clipboard 

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CVE-2026-96749 (GCVE-0-2026-96749)

Vulnerability from cvelistv5 – Published: 2026-09-24 18:18 – Updated: 2026-09-26 03:55
VLAI
Title
Heap out-of-bounds write via signed size overflow in BSON document encoding
Summary
An integer overflow in the BSON document encoding component of the MongoDB Python Driver's bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application's own process.
Severity
7.5 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
MongoDB Python Driver Affected: 1.9.0 , < 4.18.2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-96674 (GCVE-0-2026-96674)

Vulnerability from cvelistv5 – Published: 2026-09-23 15:35 – Updated: 2026-09-23 19:44
VLAI
Title
alsa-lib through 1.2.16.1 Integer Overflow via Topology File
Summary
alsa-lib through 1.2.16.1 computes combined topology element size using 32-bit arithmetic in src/topology/ctl.c, allowing integer overflow that defeats bounds checks. Attackers can supply crafted topology files that wrap size calculations, causing the decoder to read beyond the topology buffer and potentially leak sensitive data or crash the application.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 18:13 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
ALSA Project alsa-lib Affected: 0 , ≤ 1.2.16.1 (custom)
    cpe:2.3:a:alsa-project:alsa-lib:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-19 00:00
Credits
Harsh Raj Singhania
Show details on NVD website
To clipboard 

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Mitigation
Requirements

Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.

Mitigation MIT-3
Requirements

Strategy: Language Selection

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • If possible, choose a language or compiler that performs automatic bounds checking.
Mitigation MIT-4
Architecture and Design

Strategy: Libraries or Frameworks

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
  • Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
Mitigation MIT-8
Implementation

Strategy: Input Validation

  • Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
  • Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
Mitigation MIT-36
Implementation
  • Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
  • Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
Mitigation MIT-15
Architecture and Design

For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

Mitigation MIT-26
Implementation

Strategy: Compilation or Build Hardening

Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.

CAPEC-92: Forced Integer Overflow

This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

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