Falhas do tipo CWE-122

3.736 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-2023-28275HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.5%CVE-2023-32324HIGHOpenPrinting CUPS vulnerable to heap buffer overflowEPSS 1.5%CVE-2024-48998HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-48999HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49017HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49015HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-48997HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49010HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49011HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49006HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49008HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49009HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49012HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49013HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49007HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-43453HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.5%CVE-2020-27841—There's a flaw in openjpeg in versions prior to 2.4.0 in src/lib/openjp2/pi.c. When an attacker is able to provide crafted input to be proceEPSS 1.5%CVE-2025-1538HIGHD-Link DAP-1320 api set_ws_action heap-based overflowEPSS 1.5%CVE-2020-6147HIGHA heap overflow vulnerability exists in Pixar OpenUSD 20.05 when the software parses compressed sections in binary USD files. This instance EPSS 1.5%CVE-2023-28254HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 1.4%