Weaknesses of type CWE-122

3,195 results

Transbordamento de heap (heap overflow)

Ocorre quando um programa escreve dados além dos limites de um buffer alocado dinamicamente na memória heap, sobrescrevendo dados adjacentes ou metadados do alocador. Isso permite que um atacante corrompa estruturas críticas, execute código arbitrário ou cause travamento da aplicação.

Example

Uma função recebe um tamanho de entrada sem validar e copia para um buffer: `strcpy(heap_buffer, user_input)` sem verificar se user_input cabe. Se o usuário enviar 1000 bytes para um buffer de 256, o overflow sobrescreve estruturas próximas no heap e pode ser explorado para RCE.

How to mitigate

Use funções seguras de cópia (`strncpy`, `strlcpy`), valide e limite o tamanho da entrada antes de copiar, e considere usar linguagens com gerenciamento automático de memória ou ferramentas como AddressSanitizer durante testes para detectar overflows.

CVE-2026-13473HIGHIBM Storage Protect Client is vulnerable to Heap-Based Buffer OverflowEPSS 0.7%CVE-2024-37310CRITICALEVerest has an integer overflow in the "v2g_incoming_v2gtp" function EPSS 0.7%CVE-2018-10840MEDIUMLinux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploitEPSS 0.7%CVE-2024-43523MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-54949CRITICALA heap buffer overflow vulnerability in the loading of ExecuTorch models can potentially result in code execution or other undesirable effecEPSS 0.7%CVE-2023-29341HIGHAV1 Video Extension Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-53816MEDIUMGHSL-2025-058 - 7-Zip Multi-byte write heap buffer overflow in NCompress::NRar5::CDecoderEPSS 0.7%CVE-2026-0006CRITICALIn multiple locations, there is a possible out of bounds read and write due to a heap buffer overflow. This could lead to remote code executEPSS 0.7%CVE-2021-26603HIGHbandisoft ARK library heap overflow vulnerabilityEPSS 0.7%CVE-2026-23876HIGHHeap buffer overflow with attacker-controlled data in XBM parserEPSS 0.7%CVE-2026-27168HIGHSAIL: Heap-based Buffer Overflow in Sail-codecs-xwdEPSS 0.7%CVE-2026-69852HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69514HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69429HIGHWindows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-24474HIGHServer deserialization missing boundary checks - heap overflow in communication between server and controllerEPSS 0.7%CVE-2026-14669HIGHPostgreSQL to_char heap buffer overflow executes arbitrary codeEPSS 0.7%CVE-2025-26634HIGHWindows Core Messaging Elevation of Privileges VulnerabilityEPSS 0.7%CVE-2025-34164CRITICALNetSupport Manager < 14.12.0000 Heap-Based Buffer OverflowEPSS 0.7%CVE-2026-12844HIGHList::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise functionEPSS 0.7%CVE-2026-51219HIGHA heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of lib60870 v2.3.3 to v2.3.6 allows attackers to cause EPSS 0.7%