CWE-122
Heap-based Buffer Overflow
Description
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().
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-92
CVEs mapped to this weakness (2,687)
page 115 of 135| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2025-63927 | Med | 0.26 | 4.0 | 0.00 | Nov 12, 2025 | A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, the function Iec10x_Scheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This… | ||
| CVE-2023-6992 | Med | 0.26 | 4.0 | 0.00 | Jan 4, 2024 | Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow. A local attacker could exploit the problem… | ||
| CVE-2026-15028 | Low | 0.25 | 3.9 | 0.00 | Jul 10, 2026 | A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute.… | ||
| CVE-2021-25475 | Low | 0.25 | 3.9 | 0.00 | Oct 6, 2021 | A possible heap-based buffer overflow vulnerability in DSP kernel driver prior to SMR Oct-2021 Release 1 allows arbitrary memory write and code execution. | ||
| CVE-2026-18370 | Med | 0.24 | — | 0.00 | Aug 10, 2026 | entr is vulnerable to Heap-based buffer overflow in run_utility() function. The function allocates a fixed-size heap buffer using malloc(ARG_MAX) and copies command-line arguments into it. It advances the destination pointer based on the return value of strlcpy(), which returns… | ||
| CVE-2026-8997 | Med | 0.24 | — | 0.00 | May 22, 2026 | vifm is vulnerable to a heap buffer overflow during the history merge process when saving the state file (vifminfo.json). This flaw occurs because the application lacks a runtime check on the length of history entries in release builds, potentially allowing a crafted long path… | ||
| CVE-2020-15201 | Med | 0.24 | 4.8 | 0.01 | Sep 25, 2020 | In Tensorflow before version 2.3.1, the `RaggedCountSparseOutput` implementation does not validate that the input arguments form a valid ragged tensor. In particular, there is no validation that the values in the `splits` tensor generate a valid partitioning of the `values`… | ||
| CVE-2016-8622 | Low | 0.24 | 3.7 | 0.05 | Jul 31, 2018 | The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus… | ||
| CVE-2017-2591 | Low | 0.24 | 3.7 | 0.03 | Apr 30, 2018 | 389-ds-base before version 1.3.6 is vulnerable to an improperly NULL terminated array in the uniqueness_entry_to_config() function in the "attribute uniqueness" plugin of 389 Directory Server. An authenticated, or possibly unauthenticated, attacker could use this flaw to force… | ||
| CVE-2026-0130 | Low | 0.23 | 3.5 | 0.00 | Jun 16, 2026 | In RtcpChunk::decodeRtcpChunk, there is a possible out of bounds read due to a heap buffer overflow. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation. | ||
| CVE-2023-5460 | Low | 0.23 | 3.5 | 0.00 | Oct 9, 2023 | A vulnerability was found in Delta Electronics WPLSoft up to 2.51 and classified as problematic. This issue affects some unknown processing of the component Modbus Data Packet Handler. The manipulation leads to heap-based buffer overflow. The exploit has been disclosed to the… | ||
| CVE-2024-46993 | Med | 0.22 | — | 0.00 | Jul 1, 2025 | Electron is an open source framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. In versions prior to 28.3.2, 29.3.3, and 30.0.3, the nativeImage.createFromPath() and nativeImage.createFromBuffer() functions call a function downstream that is… | ||
| CVE-2024-43802 | Med | 0.22 | 4.5 | 0.00 | Aug 26, 2024 | Vim is an improved version of the unix vi text editor. When flushing the typeahead buffer, Vim moves the current position in the typeahead buffer but does not check whether there is enough space left in the buffer to handle the next characters. So this may lead to the tb_off… | ||
| CVE-2021-36054 | Low | 0.22 | 3.3 | 0.04 | Sep 1, 2021 | XMP Toolkit SDK version 2020.1 (and earlier) is affected by a buffer overflow vulnerability potentially resulting in local application denial of service in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted file. | ||
| CVE-2018-1123 | Low | 0.22 | 3.9 | 0.09 | May 23, 2018 | procps-ng before version 3.3.15 is vulnerable to a denial of service in ps via mmap buffer overflow. Inbuilt protection in ps maps a guard page at the end of the overflowed buffer, ensuring that the impact of this flaw is limited to a crash (temporary denial of service). | ||
| CVE-2026-13574 | Low | 0.21 | 3.3 | 0.00 | Jun 29, 2026 | A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to… | ||
| CVE-2026-45466 | Low | 0.21 | 3.3 | 0.00 | Jun 9, 2026 | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally. | ||
| CVE-2026-11792 | Low | 0.21 | 3.3 | 0.00 | Jun 9, 2026 | A heap buffer overflow flaw was found in 389 Directory Server. When audit logging is enabled, the create_masked_entry_string() function in auditlog.c copies a fixed-length password mask into a precisely-sized heap buffer without checking available space. If a short cleartext… | ||
| CVE-2026-5448 | Med | 0.21 | 4.3 | 0.00 | Apr 10, 2026 | X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application,… | ||
| CVE-2026-3463 | Low | 0.21 | 3.3 | 0.00 | Mar 3, 2026 | A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow. The attack can… |
- risk 0.26cvss 4.0epss 0.00
A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, the function Iec10x_Scheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This…
- risk 0.26cvss 4.0epss 0.00
Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow. A local attacker could exploit the problem…
- risk 0.25cvss 3.9epss 0.00
A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute.…
- risk 0.25cvss 3.9epss 0.00
A possible heap-based buffer overflow vulnerability in DSP kernel driver prior to SMR Oct-2021 Release 1 allows arbitrary memory write and code execution.
- risk 0.24cvss —epss 0.00
entr is vulnerable to Heap-based buffer overflow in run_utility() function. The function allocates a fixed-size heap buffer using malloc(ARG_MAX) and copies command-line arguments into it. It advances the destination pointer based on the return value of strlcpy(), which returns…
- risk 0.24cvss —epss 0.00
vifm is vulnerable to a heap buffer overflow during the history merge process when saving the state file (vifminfo.json). This flaw occurs because the application lacks a runtime check on the length of history entries in release builds, potentially allowing a crafted long path…
- risk 0.24cvss 4.8epss 0.01
In Tensorflow before version 2.3.1, the `RaggedCountSparseOutput` implementation does not validate that the input arguments form a valid ragged tensor. In particular, there is no validation that the values in the `splits` tensor generate a valid partitioning of the `values`…
- risk 0.24cvss 3.7epss 0.05
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus…
- risk 0.24cvss 3.7epss 0.03
389-ds-base before version 1.3.6 is vulnerable to an improperly NULL terminated array in the uniqueness_entry_to_config() function in the "attribute uniqueness" plugin of 389 Directory Server. An authenticated, or possibly unauthenticated, attacker could use this flaw to force…
- risk 0.23cvss 3.5epss 0.00
In RtcpChunk::decodeRtcpChunk, there is a possible out of bounds read due to a heap buffer overflow. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.
- risk 0.23cvss 3.5epss 0.00
A vulnerability was found in Delta Electronics WPLSoft up to 2.51 and classified as problematic. This issue affects some unknown processing of the component Modbus Data Packet Handler. The manipulation leads to heap-based buffer overflow. The exploit has been disclosed to the…
- risk 0.22cvss —epss 0.00
Electron is an open source framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. In versions prior to 28.3.2, 29.3.3, and 30.0.3, the nativeImage.createFromPath() and nativeImage.createFromBuffer() functions call a function downstream that is…
- risk 0.22cvss 4.5epss 0.00
Vim is an improved version of the unix vi text editor. When flushing the typeahead buffer, Vim moves the current position in the typeahead buffer but does not check whether there is enough space left in the buffer to handle the next characters. So this may lead to the tb_off…
- risk 0.22cvss 3.3epss 0.04
XMP Toolkit SDK version 2020.1 (and earlier) is affected by a buffer overflow vulnerability potentially resulting in local application denial of service in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted file.
- risk 0.22cvss 3.9epss 0.09
procps-ng before version 3.3.15 is vulnerable to a denial of service in ps via mmap buffer overflow. Inbuilt protection in ps maps a guard page at the end of the overflowed buffer, ensuring that the impact of this flaw is limited to a crash (temporary denial of service).
- risk 0.21cvss 3.3epss 0.00
A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to…
- risk 0.21cvss 3.3epss 0.00
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- risk 0.21cvss 3.3epss 0.00
A heap buffer overflow flaw was found in 389 Directory Server. When audit logging is enabled, the create_masked_entry_string() function in auditlog.c copies a fixed-length password mask into a precisely-sized heap buffer without checking available space. If a short cleartext…
- risk 0.21cvss 4.3epss 0.00
X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application,…
- risk 0.21cvss 3.3epss 0.00
A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow. The attack can…