CWE-122— Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().— MITRE CWE catalog
3,207 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-122page 45 of 65
- CVE-2026-30931HIGHCVSS 7.8EG 7.82026-03-10
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16, a heap-based buffer overflow in the UHDR encoder can happen due to truncation of a value and it would allow an out o…
- CVE-2026-30936MEDIUMCVSS 5.5EG 5.52026-03-10
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, a crafted image could cause an out of bounds heap write inside the WaveletDenoiseImage method. When pr…
- CVE-2026-30937MEDIUMCVSS 6.1EG 6.12026-03-10
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, a 32-bit unsigned integer overflow in the XWD (X Windows) encoder can cause an undersized heap buffer …
- CVE-2026-30979HIGHCVSS 7.8EG 7.82026-03-10
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap-based buffer overflow in CIccCalculatorFunc::InitSelectOp() triggered with local user interaction causing memory…
- CVE-2026-30982MEDIUMCVSS 6.1EG 6.12026-03-10
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap out-of-bounds read in CIccPcsXform::pushXYZConvert() causing crash and potentially leaking memory contents. This…
- CVE-2026-30985HIGHCVSS 7.8EG 7.82026-03-10
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap-based buffer overflow write in CIccMatrixMath::SetRange() causing memory corruption or crash. This vulnerability…
- CVE-2026-30999HIGHCVSS 7.5EG 7.52026-04-13
A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.
- CVE-2026-3147HIGHCVSS 7.8EG 7.82026-02-25
A vulnerability was found in libvips up to 8.18.0. This affects the function vips_foreign_load_csv_build of the file libvips/foreign/csvload.c. The manipulation results in heap-based buffer overflow. The attack requires a local approach. T…
- CVE-2026-31796HIGHCVSS 7.8EG 7.82026-03-10
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to 2.3.1.5, there is a heap-based buffer overflow in icCurvesFromXml() causing heap memory corruption or crash. This vulnerability is fixed …
- CVE-2026-31806CRITICALCVSS 9.8EG 9.82026-03-13
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, the gdi_surface_bits() function processes SURFACE_BITS_COMMAND messages sent by the RDP server. When the command is handled using NSCodec, the bmp.width and…
- CVE-2026-31853MEDIUMCVSS 5.5EG 5.52026-03-11
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-16 and 6.9.13-41, an overflow on 32-bit systems can cause a crash in the SFW decoder when processing extremely large images. This…
- CVE-2026-31883CRITICALCVSS 9.8EG 9.82026-03-13
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, …
- CVE-2026-3195HIGHCVSS 7.4EG 7.42026-06-19
A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the `virtio_snd_pcm_in_cb` function did not check whether the iov could fit the data buffer, potentially leading to a heap out-of-bounds write. Thi…
- CVE-2026-31962HIGHCVSS 8.8EG 8.82026-03-18
HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data. While most alignment records store DNA sequence and quality values, the format also allows them …
- CVE-2026-31963HIGHCVSS 8.1EG 8.12026-03-18
HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data. As one method of removing redundant data, CRAM uses reference-based compression so that instead …
- CVE-2026-31968HIGHCVSS 8.1EG 8.12026-03-18
HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. For the `VARINT` and `CONST` encodings, inc…
- CVE-2026-31969HIGHCVSS 8.1EG 8.12026-03-18
HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the `BYTE_…
- CVE-2026-31970HIGHCVSS 8.1EG 8.12026-03-18
HTSlib is a library for reading and writing bioinformatics file formats. GZI files are used to index block-compressed GZIP [BGZF] files. In the GZI loading function, `bgzf_index_load_hfile()`, it was possible to trigger an integer overflo…
- CVE-2026-31971HIGHCVSS 8.1EG 8.12026-03-18
HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the `BYTE_A…
- CVE-2026-32087HIGHCVSS 7.0EG 7.02026-04-14
Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
- CVE-2026-32093HIGHCVSS 7.0EG 7.02026-04-14
Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
- CVE-2026-32135HIGHCVSS 7.5EG 7.52026-04-20
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Versions prior to 0.24.11 have a remotely triggerable heap buffer overflow in the `uri_param_parse` function of NanoMQ's REST API. The vulnerability occurs due to an off…
- CVE-2026-32149HIGHCVSS 7.3EG 7.32026-04-14
Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.
- CVE-2026-32177HIGHCVSS 7.3EG 7.32026-05-12
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
- CVE-2026-32221HIGHCVSS 8.4EG 8.42026-04-14
Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code locally.
- CVE-2026-32223MEDIUMCVSS 6.8EG 6.82026-04-14
Heap-based buffer overflow in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.
- CVE-2026-3229MEDIUMCVSS 5.5EG 5.52026-03-19
An integer overflow vulnerability existed in the static function wolfssl_add_to_chain, that caused heap corruption when certificate data was written out of bounds of an insufficiently sized certificate buffer. wolfssl_add_to_chain is calle…
- CVE-2026-32316HIGHCVSS 8.2EG 8.22026-04-13
jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the jvp_string_append() and jvp_string_copy_replace_bad functions, where concatenating strings with a combined length exceeding 2^31…
- CVE-2026-32623HIGHCVSS 8.1EG 8.12026-04-17
xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in the NeutrinoRDP module. When proxying RDP sessions from xrdp to another server, the module fails to properly validate the size…
- CVE-2026-32624MEDIUMCVSS 6.5EG 6.52026-04-17
xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in its logon processing. In environments where domain_user_separator is configured in xrdp.ini, an unauthenticated remote attacke…
- CVE-2026-32710CRITICALCVSS 9.9EG 9.92026-03-20
MariaDB server is a community developed fork of MySQL server. An authenticated user can crash MariaDB versions 11.4 before 11.4.10 and 11.8 before 11.8.6 via a bug in JSON_SCHEMA_VALID() function. Under certain conditions it might be possi…
- CVE-2026-32741HIGHCVSS 7.1EG 7.12026-05-19
libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and below contain a heap buffer overflow in MaskImageCodec::decode_mask_image(). When decoding a HEIF file containing a mask image (mski), the function copies the …
- CVE-2026-3281HIGHCVSS 7.8EG 7.82026-02-27
A vulnerability was detected in libvips 8.19.0. This affects the function vips_bandrank_build of the file libvips/conversion/bandrank.c. Performing a manipulation of the argument index results in heap-based buffer overflow. The attack must…
- CVE-2026-32945CRITICALCVSS 9.8EG 9.82026-03-20
PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a Heap-based Buffer Overflowvulnerability in the DNS parser's name length handler. Thisimpacts applications using PJSIP's built-in …
- CVE-2026-32956CRITICALCVSS 9.8EG 9.82026-04-20
SD-330AC and AMC Manager provided by silex technology, Inc. contain a heap-based buffer overflow vulnerability in processing the redirect URLs. Arbitrary code may be executed on the device.
- CVE-2026-32961MEDIUMCVSS 5.3EG 5.32026-04-20
SD-330AC and AMC Manager provided by silex technology, Inc. contain a heap-based buffer overflow vulnerability in packet data processing of sx_smpd. Processing a crafted packet may cause a temporary denial-of-service (DoS) condition.
- CVE-2026-33020HIGHCVSS 7.1EG 7.12026-04-14
libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain an integer overflow which leads to a heap buffer overflow via sixel_frame_convert_to_rgb888() in frame.c, where allocation size…
- CVE-2026-33164HIGHCVSS 7.5EG 7.52026-03-20
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a malformed H.265 PPS NAL unit causes a segmentation fault in pic_parameter_set::set_derived_values(). This issue has been patched in version 1.0.…
- CVE-2026-33298HIGHCVSS 7.8EG 7.82026-03-24
llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimension…
- CVE-2026-33602MEDIUMCVSS 6.5EG 6.52026-04-22
A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.
- CVE-2026-33633HIGHCVSS 8.8EG 8.82026-05-19
Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in load_image_data() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is tr…
- CVE-2026-33837HIGHCVSS 7.8EG 7.82026-05-12
Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- CVE-2026-33841HIGHCVSS 7.8EG 7.82026-05-12
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
- CVE-2026-33899MEDIUMCVSS 5.3EG 5.32026-04-13
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when `Magick` parses an XML file it is possible that a single zero byte is written out of the bounds.…
- CVE-2026-33901HIGHCVSS 7.5EG 7.52026-04-13
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when…
- CVE-2026-3393HIGHCVSS 7.8EG 7.82026-03-01
A security vulnerability has been detected in jarikomppa soloud up to 20200207. The impacted element is the function SoLoud::Wav::loadflac of the file src/audiosource/wav/soloud_wav.cpp of the component Audio File Handler. Such manipulatio…
- CVE-2026-33984HIGHCVSS 7.5EG 7.52026-03-30
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If reall…
- CVE-2026-33986HIGHCVSS 7.5EG 7.52026-03-30
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recall…
- CVE-2026-33987MEDIUMCVSS 6.6EG 6.62026-03-30
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fail…
- CVE-2026-3407LOWCVSS 3.3EG 3.32026-03-02
A vulnerability was determined in YosysHQ yosys up to 0.62. This affects the function Yosys::RTLIL::Const::set of the file kernel/rtlil.h of the component BLIF File Parser. This manipulation causes heap-based buffer overflow. It is possibl…
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