Falhas do tipo CWE-122

3.190 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2025-62220HIGHWindows Subsystem for Linux GUI Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-13473HIGHIBM Storage Protect Client is vulnerable to Heap-Based Buffer OverflowEPSS 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-2025-54951CRITICALA group of related buffer overflow vulnerabilities in the loading of ExecuTorch models can cause the runtime to crash and potentially resultEPSS 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-2024-37310CRITICALEVerest has an integer overflow in the "v2g_incoming_v2gtp" function EPSS 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-2026-69514HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69429HIGHWindows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69852HIGHWindows Routing and Remote Access Service (RRAS) 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%