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CWE-122

3,698 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 (3,698)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Microsoft
15Windows 10 1507
Windows 10 1607Windows 10 1809+12 more
Jun 17, 2026
Jul 8, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Microsoft MPEG-2 Video Extension allows an authorized attacker to execute code locally.
1Microsoft
7Windows Server 2008
Windows Server 2012Windows Server 2016+4 more
Jun 17, 2026
Jul 8, 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
Jun 17, 2026
Jul 8, 2025
N/A· v4
7.8 HIGH· v3
N/A· v2
Heap-based buffer overflow in Windows Cred SSProvider Protocol allows an authorized attacker to elevate privileges locally.
1Microsoft
15Windows 10 1507
Windows 10 1607Windows 10 1809+12 more
Jun 17, 2026
Jul 8, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over a network.
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-
Jun 17, 2026
Jul 8, 2025
8.4 HIGH· v4
7.8 HIGH· v3
N/A· v2
A heap-based buffer overflow vulnerability exists in VS6Sim.exe contained in V-SFT and TELLUS provided by FUJI ELECTRIC CO., LTD. Opening V9 files or X1 files specially crafted by an attacker on the affected product may...Show more
A heap-based buffer overflow vulnerability exists in VS6Sim.exe contained in V-SFT and TELLUS provided by FUJI ELECTRIC CO., LTD. Opening V9 files or X1 files specially crafted by an attacker on the affected product may lead to arbitrary code execution.Show less
2Mediatek
Openwrt
2Openwrt
Software Development Kit
Jun 17, 2026
Jul 8, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction i...Show more
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00415570; Issue ID: MSV-3404.Show less
2Mediatek
Openwrt
2Openwrt
Software Development Kit
Jun 17, 2026
Jul 8, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction i...Show more
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00416226; Issue ID: MSV-3409.Show less
1Mediatek
1Nbiot Sdk
Jun 17, 2026
Jul 8, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
In Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for ex...Show more
In Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418044; Issue ID: MSV-3482.Show less
1Huawei
1Harmonyos
Jun 17, 2026
Jul 7, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Null pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function stability.
1Huawei
1Harmonyos
Jun 17, 2026
Jul 7, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Null pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function stability.
1Huawei
1Harmonyos
Jun 17, 2026
Jul 7, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Null pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function stability.
1Huawei
1Harmonyos
Jun 17, 2026
Jul 7, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Null pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function stability.
1Huawei
1Harmonyos
Jun 17, 2026
Jul 7, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Null pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function stability.
1Huawei
1Harmonyos
Jun 17, 2026
Jul 7, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Null pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function stability.
1Hdfgroup
1Hdf5
Jun 17, 2026
Jul 4, 2025
1.9 LOW· v4
5.5 MEDIUM· v3
1.7 LOW· v2
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FS__sect_link_size of the file src/H5FSsection.c. The manipulation leads to heap-based buffer overflow. It is pos...Show more
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FS__sect_link_size of the file src/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
Jun 17, 2026
Jul 4, 2025
1.9 LOW· v4
5.5 MEDIUM· v3
1.7 LOW· v2
A vulnerability classified as problematic was found in HDF5 1.14.6. This vulnerability affects the function H5FS__sinfo_serialize_node_cb of the file src/H5FScache.c. The manipulation leads to heap-based buffer overflow....Show more
A vulnerability classified as problematic was found in HDF5 1.14.6. This vulnerability affects the function H5FS__sinfo_serialize_node_cb of the file src/H5FScache.c. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.Show less
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-
Jul 5, 2026
Jul 2, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
WINSTAR WN572HP3 v230525 was discovered to contain a heap overflow via the CONTENT_LENGTH variable at /cgi-bin/upload.cgi.
1Python
1Pillow
Jun 17, 2026
Jul 1, 2025
N/A· v4
5.5 MEDIUM· v3
N/A· v2
Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into...Show more
Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into a buffer without checking for available space. This only affects users who save untrusted data as a compressed DDS image. This issue has been patched in version 11.3.0.Show less
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-
Jun 17, 2026
Jul 1, 2025
4.4 MEDIUM· v4
N/A· v3
N/A· v2
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.creat...Show more
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 vulnerable to a heap buffer overflow. An Electron program that uses either of the affected functions is vulnerable to a buffer overflow if an attacker is in control of the image's height, width, and contents. This issue has been patched in versions 28.3.2, 29.3.3, and 30.0.3. There are no workarounds for this issue.Show less
1Hdfgroup
1Hdf5
Jun 17, 2026
Jun 28, 2025
1.9 LOW· v4
7.8 HIGH· v3
1.7 LOW· v2
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.c. The manipulation leads to heap-based buffer overflow. An attack has...Show more
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.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