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
2,574 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-122page 44 of 52
- 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-2026-32710HIGHCVSS 9.9EG 8.62026-03-20
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-2026-3281MEDIUMCVSS 7.8EG 5.32026-02-27
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-2026-3393LOWCVSS 7.8EG 3.32026-03-01
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-2026-33987HIGHCVSS 6.6EG 7.12026-03-30
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…
- CVE-2026-34118MEDIUMCVSS 6.5EG 6.52026-04-02
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary valid…
- CVE-2026-34119MEDIUMCVSS 6.5EG 6.52026-04-02
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP parsing loop when appending segmented request bodies without continuous write‑boundary verification, due to insufficient boundary vali…
- CVE-2026-34120MEDIUMCVSS 6.5EG 6.52026-04-02
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming…
- CVE-2026-34150HIGHCVSS 7.5EG 7.52026-07-16
Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 1.0.0 and above, prior to 4.14.5, a heap buffer overflow in wazuh-analysisd allows an unauthenticated remote attacker to crash the Wa…
- CVE-2026-34329HIGHCVSS 8.8EG 8.82026-05-12
Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over an adjacent network.
- CVE-2026-34336HIGHCVSS 7.8EG 7.82026-05-12
Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
- CVE-2026-34343HIGHCVSS 7.8EG 7.82026-05-12
Heap-based buffer overflow in Windows Application Identity (AppID) Subsystem allows an authorized attacker to elevate privileges locally.
- CVE-2026-34355HIGHCVSS 7.5EG 7.52026-06-08
A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.
- CVE-2026-34356HIGHCVSS 7.5EG 7.52026-06-08
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.6…
- CVE-2026-34534MEDIUMCVSS 5.5EG 6.22026-03-31
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a heap-buffer-overflow (HBO) in CIccMpeSpectralMatrix::Describe(). The issue is observ…
- CVE-2026-34535MEDIUMCVSS 5.5EG 6.22026-03-31
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a segmentation fault (SEGV) in CIccTagArray::Cleanup(). The issue is observable under …
- CVE-2026-34539MEDIUMCVSS 5.5EG 6.22026-03-31
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile and TIFF input can trigger a heap-buffer-overflow (HBO) in CTiffImg::WriteLine(). The issue is obs…
- CVE-2026-34540MEDIUMCVSS 5.5EG 6.22026-03-31
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a heap-buffer-overflow (HBO) in icMemDump() when iccDumpProfile attempts to dump/descr…
- CVE-2026-34545HIGHCVSS 7.3EG 7.32026-04-01
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ…
- CVE-2026-34627HIGHCVSS 7.8EG 7.82026-04-14
InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user intera…
- CVE-2026-34628HIGHCVSS 7.8EG 7.82026-04-14
InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user intera…
- CVE-2026-34629HIGHCVSS 7.8EG 7.82026-04-14
InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user intera…
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