Weakness (CWE)
CWE-122: Heap-based Buffer Overflow
The product writes past the end of a buffer that was allocated on the heap.
How to prevent it (7 mitigations)
-
Pre-design: Use a language or compiler that performs automatic bounds checking.
-
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
-
Operation, Build and Compilation
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
-
Operation, Build and Compilation
Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
-
Implementation
Implement and perform bounds checking on input.
-
Implementation
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
-
Operation
Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
Source: MITRE CWE-122
4,087 results · Feed
-
High 7.8
FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer
FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-…
-
Critical 9.8
FFmpeg Heap Buffer Overflow via RIST Protocol Reader
FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it …
-
High 7.8
FFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC Muxing
FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflo…
-
High 7.3
jxl-oxide: Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms
jxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid arithmetic. A 65536 x…
-
Critical 9.8
Heap based buffer overflow in iconv(3)
Several encoding modules, including HZ, UTF-7, VIQR, and ZW, did not properly check the size of the caller-supplied output buffer before writing converted characters. An application that uses iconv(3) to convert untrusted input to or from one of the affected …
-
High 7.8
Kernel heap overflow in ZFS_IOC_RECV_NEW ioctl
The ZFS_IOC_RECV_NEW ioctl, in the heal receive path, similarly truncated a 64-bit payload size to a 32-bit integer for allocation, then used the original 64-bit size as the length for a byteswap operation. A local user with the "receive" delegated ZFS permis…
-
High 7.8
Kernel heap overflow in ZFS_IOC_USERSPACE_MANY ioctl
The ZFS_IOC_USERSPACE_MANY ioctl, used by zfs-userspace(8), truncated a 64-bit output buffer size to a 32-bit integer for the kernel allocation, but used the original 64-bit size as the buffer limit when writing records. A local user with the "userused" deleg…
-
High 8.3
Buffer overflow in ANGLE in Google Chrome on on Android prior to 151.0.7922.169 allowed a remote attacker who had compr…
-
Critical 9.6
Buffer overflow in Dawn in Google Chrome on on Android prior to 151.0.7922.169 allowed a remote attacker to execute arb…
-
High 8.8
Buffer overflow in WebGL in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code o…
-
High 7.5
Buffer Overflow vulnerability in Open5GS v.2.7.0 allows a remote attacker to cause a denial of service via the NAS 5GS …
-
Medium 6.1
hashcat KeePass KDBX v4 Module Heap Buffer Overflow via Token Field
hashcat master branch builds after v7.1.2 contain a heap buffer overflow vulnerability in the KeePass AESKDF/KDBX v4 module (module 34301) that allows attackers to corrupt adjacent heap memory by supplying an oversized ninth hash field token. The module accep…
-
Medium 6.3
Open Asset Import Library Assimp Node MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 heap-based overflow
A vulnerability was detected in Open Asset Import Library Assimp 17c12da. This affects the function Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component Node Parser. The manipulation of the argument b…
-
Medium 4.3
Open Asset Import Library Assimp 3DGS MDL7 Model LWOLoader.h ReadFaces_3DGS_MDL7 heap-based overflow
A weakness has been identified in Open Asset Import Library Assimp 17c12da. The affected element is the function Assimp::MDLImporter::ReadFaces_3DGS_MDL7 in the library code/AssetLib/LWO/LWOLoader.h of the component 3DGS MDL7 Model Parser. Executing a manipul…
-
Medium 6.3
Open Asset Import Library Assimp File Compression.cpp decompressBlock heap-based overflow
A security flaw has been discovered in Open Asset Import Library Assimp 17c12da. Impacted is the function Assimp::Compression::decompressBlock of the file code/Common/Compression.cpp of the component File Parser. Performing a manipulation results in heap-base…
-
Critical 9.8
A heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateM…
-
High 8.3
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
-
High 8.8
PostgreSQL pg_dump heap buffer overflow executes arbitrary code
Heap buffer overflow in PostgreSQL pg_dump of long function transform lists allows an object creator to execute arbitrary code as the operating system user running pg_dump, via a crafted transform list. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, an…
-
High 8.8
PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code
Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQ…
-
High 8.8
PostgreSQL plperl tied object heap buffer overflow executes arbitrary code
Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24…
-
High 8.8CVE-2026-14669 Public exploit
PostgreSQL to_char heap buffer overflow executes arbitrary code
Heap buffer overflow in PostgreSQL to_char(timestamptz) allows the party choosing the timezone to execute arbitrary code as the operating system user running the database, via a long POSIX timezone abbreviation. Versions before PostgreSQL 18.6, 17.11, 16.15, …
-
High 8.8
PostgreSQL regexp heap buffer overflow executes arbitrary code
Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but this case involved un…
-
Medium 6.0
Heap buffer overflow in Modbusgwd
In Teltonika Networks RUTOS devices, a vulnerability exists in modbusgwd due to improper handling of Modbus TCP request data. A remote, unauthenticated attacker with access to the affected service could trigger a heap-based buffer overflow, resulting in a den…
-
Medium 4.7
Heap-based Buffer Overflow in Wireshark
TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service
-
High 8.1
MongoDB BI Connector ODBC Driver Memory-Safety Issue When Handling Stored Procedure Output Parameters
An application using the MongoDB BI Connector ODBC Driver may experience a memory-safety issue when processing output parameters from a stored procedure. Triggering this issue requires connecting to an untrusted or impersonated database server that returns cr…
-
Medium 6.3
Open5GS Diameter S6a mme-fd-path.c mme_s6a_subscription_data_from_avp heap-based overflow
A vulnerability was determined in Open5GS up to 2.7.1. This vulnerability affects the function mme_s6a_subscription_data_from_avp of the file src/mme/mme-fd-path.c of the component Diameter S6a Interface. Executing a manipulation of the argument msisdn_len ca…
-
High 8.3
FreeRDP: Kerberos GSS Wrap-token `EC` field is unbounded, causing an out-of-bounds decrypt in `kerberos_DecryptMessage`
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP's winpr/libwinpr/sspi/Kerberos/kerberos.c kerberos_DecryptMessage function fails to bound the peer-controlled GSS Wrap-token EC field before using it with RRC in IOV poi…
-
High 8.1
Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.
-
High 8.4
Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
-
High 7.8
Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
-
High 7.8
Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
-
High 7.8
Microsoft Excel Remote Code Execution Vulnerability
Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
-
High 7.8
Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
-
High 7.8
Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
-
Medium 5.5
Microsoft Office Word Information Disclosure Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
-
High 8.1
Windows iSCSI Target Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.
-
Medium 6.7
Windows DNS Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows DNS allows an authorized attacker to elevate privileges locally.
-
Medium 6.7
Windows DNS Elevation of Privilege Vulnerability
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
-
Critical 9.8
Windows iSCSI Target Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.
-
High 7.8
Windows Message Queuing Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.