Integer Overflow or Wraparound
CWE-190
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.
We track 963 vulnerabilities of this type. 100% are rated high or critical, and the average CVSS score is 8.2. 22 have been exploited in real attacks.
How this weakness is prevented
- 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.
- Requirements: 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.
- Architecture and Design: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. 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++).
- Implementation: 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.
- 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. Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
Latest Integer Overflow or Wraparound vulnerabilities
- 9.1 Critical severity
psd-tools: Integer Overflow or Wraparound
psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.12.2, when a PSD file contains malformed RLE-compressed image data (e.g. a literal run that extends past the expected row size), decode_rle() raises ValueError which p
- 7.5 High severity
FreeRDP: Integer Overflow or Wraparound
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function `Stream_EnsureCapacity` can create an endless blocking loop. This may affect all client and server implementations using `FreeRDP`. For practical exploitatio
- 9.8 Critical severity
Firefox: Integer Overflow or Wraparound
Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.8, and Firefox ESR 115.35.
- 9.8 Critical severity
Firefox: Integer Overflow or Wraparound
Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
- 9.8 Critical severity
Firefox: Integer Overflow or Wraparound
Integer overflow in the JavaScript: Standard Library component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
- 7.5 High severity
ImageMagick: Off-by-one Error
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a crafted SVG file can cause a denial of service. An off-by-one boundary check (`>` instead of `>=`) that allows bypass the
- 7.5 High severity
ImageMagick: Integer Overflow or Wraparound
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a signed integer overflow vulnerability in ImageMagick's SIXEL decoder allows an attacker to trigger memory corruption and
- 9.8 Critical severity
ImageMagick: Integer Overflow or Wraparound
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, an Integer Overflow vulnerability exists in the sun decoder. On 32-bit systems/builds, a carefully crafted image can lead t
- 8.2 High severity
ImageMagick: Heap-based Buffer Overflow
ImageMagick is free and open-source software used for editing and manipulating digital images. `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. Prior to version 7.1.2-15, when image dimensions are large, the multiplic
- 9.1 Critical severity
Crypt::NaCl::Sodium: Integer Overflow or Wraparound
Crypt::NaCl::Sodium versions through 2.001 for Perl has an integer overflow flaw on 32-bit systems. Sodium.xs casts a STRLEN (size_t) to unsigned long long when passing a length pointer to libsodium functions. On 32-bit systems size_t is typically 32-bits whil
- 7.0 High severity
AMD Ryzen™ 4000 Series Mobile Processors with…: Integer Overflow or Wraparound
Integer Overflow within atihdwt6.sys can allow a local attacker to cause out of bound read/write potentially leading to loss of confidentiality, integrity and availability
- 7.8 High severity
Adobe DNG Software Development Kit (SDK): Integer Overflow or Wraparound
DNG SDK versions 1.7.1 2410 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must
- 7.8 High severity
Bridge: Integer Overflow or Wraparound
Bridge versions 15.1.3, 16.0.1 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim m
- 7.8 High severity
After Effects: Integer Overflow or Wraparound
After Effects versions 25.6 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must
- 7.5 High severity
Fast-DDS: Integer Overflow or Wraparound
eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Prior to 2.6.11, 2.14.6, 3.2.4, 3.3.1, and 3.4.1, when the security mode is enabled, modifying the DATA Submessage within an SPDP pa
- 7.5 High severity
Fast-DDS: Integer Overflow or Wraparound
eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Prior to 2.6.11, 2.14.6, 3.2.4, 3.3.1, and 3.4.1, when the security mode is enabled, modifying the DATA Submessage within an SPDP pa
- 7.8 High severity
libexpat: Integer Overflow or Wraparound
In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.
- 7.8 High severity
GeForce: Integer Overflow or Wraparound
NVIDIA Display Driver for Linux contains a vulnerability in the NVIDIA kernel module where an attacker could cause an integer overflow or wraparound. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tamper
- 7.8 High severity
GeForce: Integer Overflow or Wraparound
NVIDIA GPU Display Driver for Windows contains a vulnerability in the kernel mode layer (nvlddmkm.sys), where an attacker could cause an integer overflow. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data t
- 8.8 High severity
Beckhoff.Device.Manager.XAR: Integer Overflow or Wraparound
A low privileged remote attacker can execute arbitrary code by sending specially crafted calls to the web service of the Device Manager or locally via an API and can cause integer overflows which then may lead to arbitrary code execution within privileged proc
- 10.0 Critical severity
swoole-src: Integer Overflow or Wraparound
Integer Overflow or Wraparound vulnerability in swoole swoole-src (thirdparty/hiredis modules). This vulnerability is associated with program files sds.C. This issue affects swoole-src: before 6.0.2.
- 8.3 High severity
RawTherapee: Integer Overflow or Wraparound
Integer Overflow or Wraparound vulnerability in RawTherapee (rtengine modules). This vulnerability is associated with program files dcraw.Cc. This issue affects RawTherapee: through 5.11.
- 8.8 High severity
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color…
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. In versions 2.3.1.1 and below, an integer overflow vulnerability exists in icValidateStatus CIccProfile::CheckHeader() when user-controllable in
- 9.8 Critical severity
ImageMagick: Heap-based Buffer Overflow
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data pa
- 7.5 High severity
esphome: Integer Overflow or Wraparound
ESPHome is a system to control microcontrollers remotely through Home Automation systems. In versions 2025.9.0 through 2025.12.6, an integer overflow in the API component's protobuf decoder allows denial-of-service attacks when API encryption is not used. The
- 7.8 High severity
raylib: Integer Overflow or Wraparound
A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is p
- 7.1 High severity
Kerberos 5: Integer Overflow or Wraparound
In MIT Kerberos 5 (aka krb5) before 1.22 (with incremental propagation), there is an integer overflow for a large update size to resize() in kdb_log.c. An authenticated attacker can cause an out-of-bounds write and kadmind daemon crash.
- 8.4 High severity
glibc: Integer Overflow or Wraparound
Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign, aligned_alloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could consequently result in a heap corruption. Note that the attacke
- 9.8 Critical severity
Linux: Integer Overflow or Wraparound
In the Linux kernel, the following vulnerability has been resolved: iomap: adjust read range correctly for non-block-aligned positions iomap_adjust_read_range() assumes that the position and length passed in are block-aligned. This is not always the case howev
- 7.5 High severity
Firefox: Integer Overflow or Wraparound
Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
- 7.8 High severity
libpng: Out-of-bounds Read
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit
- 8.8 High severity
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and…
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `SIccCalcOp::ArgsPush
- 7.8 High severity
iccDEV: Heap-based Buffer Overflow
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1.1 and below contain Use After Free, Heap-based Buffer Overflow and Integer Overflow or Wraparound and Out-of-bounds Write vulnerabilities in its CIccSpa
- 8.8 High severity
iccDEV provides a set of libraries and tools for working with ICC color management profiles.
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1.1 and below are prone to have Undefined Behavior (UB) and Out of Memory errors. This issue is fixed in version 2.3.1.2.
- 7.8 High severity
iccDEV: Integer Overflow or Wraparound
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have overflows and underflows in CIccXmlArrayType::ParseTextCountNum(). This vulnerability affects users of the iccDEV library who process ICC
- 7.8 High severity
FontForge: Integer Overflow or Wraparound
FontForge GUtils XBM File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in t
- 7.5 High severity
WasmEdge: Integer Overflow or Wraparound
WasmEdge is a WebAssembly runtime. Prior to version 0.16.0-alpha.3, a multiplication in `WasmEdge/include/runtime/instance/memory.h` can wrap, causing `checkAccessBound()` to incorrectly allow the access. This leads to a segmentation fault. Version 0.16.0-alph
- 7.5 High severity
ImageMagick: Integer Overflow or Wraparound
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-12, in the WriteSVGImage function, using an int variable to store number_attributes caused an integer overflow. This, in turn, triggered a buf
- 7.1 High severity
libheif: Out-of-bounds Read
libheif is an HEIF and AVIF file format decoder and encoder. Prior to version 1.21.0, a crafted HEIF that exercises the overlay image item path triggers a heap buffer over-read in `HeifPixelImage::overlay()`. The function computes a negative row length (likely
- 8.2 High severity
PHP: Integer Overflow or Wraparound
In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an