Falhas do tipo CWE-122

3.737 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-2020-6150HIGHA heap overflow vulnerability exists in Pixar OpenUSD 20.05 when the software USDC file format SPECS section decompression heap overflow.EPSS 1.3%CVE-2020-6148HIGHA heap overflow vulnerability exists in Pixar OpenUSD 20.05 when the software parses compressed sections in binary USD files. An instance exEPSS 1.3%CVE-2023-29362HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 1.3%CVE-2023-29372HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.3%CVE-2025-29967HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 1.3%CVE-2022-0359MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.3%CVE-2021-21940CRITICALA heap-based buffer overflow vulnerability exists in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h. A speciaEPSS 1.3%CVE-2026-70291CRITICALMicrosoft Office Outlook Remote Code Execution VulnerabilityEPSS 1.3%CVE-2026-0797HIGHGIMP ICO File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.3%CVE-2020-4068MEDIUMHeap-based Buffer Overflow in APNSwiftEPSS 1.3%CVE-2022-1160HIGHheap buffer overflow in get_one_sourceline in vim/vimEPSS 1.3%CVE-2026-21244HIGHWindows Hyper-V Remote Code Execution VulnerabilityEPSS 1.3%CVE-2026-21248HIGHWindows Hyper-V Remote Code Execution VulnerabilityEPSS 1.3%CVE-2024-30020HIGHWindows Cryptographic Services Remote Code Execution VulnerabilityEPSS 1.3%CVE-2020-25199—A heap-based buffer overflow vulnerability exists within the WECON LeviStudioU Release Build 2019-09-21 and prior when processing project fiEPSS 1.3%CVE-2017-20241CRITICALKeysight IxChariot Endpoint heap-based buffer overflowEPSS 1.3%CVE-2025-14905HIGH389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflowEPSS 1.3%CVE-2022-2344HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.3%CVE-2022-2264HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.3%CVE-2023-23406HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.3%