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CWE-122

2,312 CVEs • Abstraction: Variant • Likelihood of Exploit: High

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().

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CVEs (2,312)

CVE
VENDORS
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UPDATED
PUBLISHED
CVSS
1Hdfgroup
1Hdf5
Apr 29, 2026
Jun 23, 2025
1.9 LOW· v4
7.8 HIGH· v3
4.3 MEDIUM· v2
A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer over...Show more
A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.Show less
1Vstakhov
1Libucl
Apr 29, 2026
Jun 23, 2025
1.9 LOW· v4
5.5 MEDIUM· v3
1.7 LOW· v2
A vulnerability classified as problematic was found in vstakhov libucl up to 0.9.2. Affected by this vulnerability is the function ucl_parse_multiline_string of the file src/ucl_parser.c. The manipulation leads to heap-b...Show more
A vulnerability classified as problematic was found in vstakhov libucl up to 0.9.2. Affected by this vulnerability is the function ucl_parse_multiline_string of the file src/ucl_parser.c. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.Show less
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-
Apr 29, 2026
Jun 22, 2025
1.9 LOW· v4
3.3 LOW· v3
1.7 LOW· v2
A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833. It has been classified as problematic. This affects the function hashmap_get_with_hash of the file gumbo-parser/src/hashmap.c....Show more
A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833. It has been classified as problematic. This affects the function hashmap_get_with_hash of the file gumbo-parser/src/hashmap.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The patch is named ada4708e5a67114402cd3feb70a4e1d1d7cf773a. It is recommended to apply a patch to fix this issue. The project maintainer explains that the affected code was merged into the main branch but the commit never appeared in an official release.Show less
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Apr 29, 2026
Jun 22, 2025
1.9 LOW· v4
3.3 LOW· v3
1.7 LOW· v2
A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833 and classified as problematic. This issue affects the function hashmap_set_with_hash of the file gumbo-parser/src/hashmap.c. Th...Show more
A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833 and classified as problematic. This issue affects the function hashmap_set_with_hash of the file gumbo-parser/src/hashmap.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The identifier of the patch is ada4708e5a67114402cd3feb70a4e1d1d7cf773a. It is recommended to apply a patch to fix this issue. The project maintainer explains that the affected code was merged into the main branch but the commit never appeared in an official release.Show less
1Sony
1Xav Ax8500 Firmware
Jul 8, 2025
Jun 21, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Sony XAV-AX8500 Bluetooth AVCTP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XA...Show more
Sony XAV-AX8500 Bluetooth AVCTP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-AX8500 devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of the Bluetooth AVCTP protocol. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26290.Show less
1Sony
1Xav Ax8500 Firmware
Jul 8, 2025
Jun 21, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Sony XAV-AX8500 Bluetooth L2CAP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Sony XAV-AX8500 devices....Show more
Sony XAV-AX8500 Bluetooth L2CAP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Sony XAV-AX8500 devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of the Bluetooth L2CAP protocol. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the elysian-bt-service process. Was ZDI-CAN-26286.Show less
1Openvpn
1Ovpn Dco Win
Aug 21, 2025
Jun 20, 2025
N/A· v4
5.5 MEDIUM· v3
N/A· v2
Buffer overflow in OpenVPN ovpn-dco-win version 1.3.0 and earlier and version 2.5.8 and earlier allows a local user process to send a too large control message buffer to the kernel driver resulting in a system crash
1Hdfgroup
1Hdf5
Apr 29, 2026
Jun 19, 2025
1.9 LOW· v4
5.3 MEDIUM· v3
4.3 MEDIUM· v2
A vulnerability, which was classified as critical, has been found in HDF5 up to 1.14.6. Affected by this issue is the function H5FS__sect_find_node of the file H5FSsection.c. The manipulation leads to heap-based buffer o...Show more
A vulnerability, which was classified as critical, has been found in HDF5 up to 1.14.6. Affected by this issue is the function H5FS__sect_find_node of the file H5FSsection.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.Show less
1Hdfgroup
1Hdf5
Apr 29, 2026
Jun 19, 2025
1.9 LOW· v4
5.3 MEDIUM· v3
4.3 MEDIUM· v2
A vulnerability classified as critical was found in HDF5 up to 1.14.6. Affected by this vulnerability is the function H5C__reconstruct_cache_entry of the file H5Cimage.c. The manipulation leads to heap-based buffer overf...Show more
A vulnerability classified as critical was found in HDF5 up to 1.14.6. Affected by this vulnerability is the function H5C__reconstruct_cache_entry of the file H5Cimage.c. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.Show less
1Clamav
1Clamav
Nov 3, 2025
Jun 18, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on an aff...Show more
A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on an affected device. This vulnerability exists because memory buffers are allocated incorrectly when PDF files are processed. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to trigger a buffer overflow, likely resulting in the termination of the ClamAV scanning process and a DoS condition on the affected software. Although unproven, there is also a possibility that an attacker could leverage the buffer overflow to execute arbitrary code with the privileges of the ClamAV process.Show less
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Jun 17, 2025
Jun 17, 2025
8.4 HIGH· v4
N/A· v3
N/A· v2
A Heap-based Buffer Overflow vulnerability exists within the parsing of PRJ files. The issues result from the lack of proper validation of user-supplied data, which can result in different memory corruption issues within...Show more
A Heap-based Buffer Overflow vulnerability exists within the parsing of PRJ files. The issues result from the lack of proper validation of user-supplied data, which can result in different memory corruption issues within the application, such as reading and writing past the end of allocated data structures.Show less
1Assimp
1Assimp
Apr 29, 2026
Jun 16, 2025
1.9 LOW· v4
5.3 MEDIUM· v3
4.3 MEDIUM· v2
A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.c...Show more
A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.Show less
1Apache
1Nuttx
Jun 17, 2025
Jun 16, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Out-of-bounds Write resulting in possible Heap-based Buffer Overflow vulnerability was discovered in tools/bdf-converter font conversion utility that is part of Apache NuttX RTOS repository. This standalone program is op...Show more
Out-of-bounds Write resulting in possible Heap-based Buffer Overflow vulnerability was discovered in tools/bdf-converter font conversion utility that is part of Apache NuttX RTOS repository. This standalone program is optional and neither part of NuttX RTOS nor Applications runtime, but active bdf-converter users may be affected when this tool is exposed to external provided user data data (i.e. publicly available automation). This issue affects Apache NuttX: from 6.9 before 12.9.0. Users are recommended to upgrade to version 12.9.0, which fixes the issue.Show less
1Microsoft
1365 Apps
Jul 9, 2025
Jun 11, 2025
N/A· v4
8.4 HIGH· v3
N/A· v2
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
1Adobe
1Incopy
Jul 15, 2025
Jun 10, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
InCopy versions 20.2, 19.5.3 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 us...Show more
InCopy versions 20.2, 19.5.3 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 interaction in that a victim must open a malicious file.Show less
1Microsoft
2365 Apps
Office Long Term Servicing Channel
Jul 9, 2025
Jun 10, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
1Microsoft
6365 Apps
OfficeOffice Long Term Servicing Channel+3 more
Jul 9, 2025
Jun 10, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
1Microsoft
3365 Apps
OfficeOffice Long Term Servicing Channel
Jul 9, 2025
Jun 10, 2025
N/A· v4
8.4 HIGH· v3
N/A· v2
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
1Microsoft
15Windows 10 1507
Windows 10 1607Windows 10 1809+12 more
Jul 10, 2025
Jun 10, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
1Microsoft
15Windows 10 1507
Windows 10 1607Windows 10 1809+12 more
Jul 10, 2025
Jun 10, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.