Falhas do tipo CWE-122

3.195 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-2026-33899MEDIUMImageMagick: Heap BufferOverflow write of single zero byte when parsing XMLEPSS 0.5%CVE-2022-2580HIGHHeap-based Buffer Overflow in vim/vimEPSS 0.5%CVE-2024-8636HIGHHeap buffer overflow in Skia in Google Chrome prior to 128.0.6613.137 allowed a remote attacker to potentially exploit heap corruption via aEPSS 0.5%CVE-2023-27390HIGHA heap-based buffer overflow vulnerability exists in the Sequence::DrawText functionality of Diagon v1.0.139. A specially crafted markdown fEPSS 0.5%CVE-2026-23533HIGHFreeRDP has heap-buffer-overflow in clear_decompress_residual_dataEPSS 0.5%CVE-2026-23532HIGHFreeRDP has heap-buffer-overflow in gdi_SurfaceToSurfaceEPSS 0.5%CVE-2026-23534HIGHFreeRDP has heap-buffer-overflow in clear_decompress_bands_dataEPSS 0.5%CVE-2026-23530HIGHFreeRDP has heap-buffer-overflow in planar_decompress_plane_rleEPSS 0.5%CVE-2026-23531HIGHFreeRDP has heap-buffer-overflow in clear_decompressEPSS 0.5%CVE-2026-31968HIGHHTSlib CRAM decoder vulnerable to buffer overflowEPSS 0.5%CVE-2025-2152MEDIUMOpen Asset Import Library Assimp File BaseImporter.cpp ConvertToUTF8 heap-based overflowEPSS 0.5%CVE-2026-31971HIGHHTSlib CRAM decoder vulnerable to buffer overflowEPSS 0.5%CVE-2026-31969HIGHHTSlib CRAM decoder has a heap buffer overflowEPSS 0.5%CVE-2026-31963HIGHHTSlib CRAM reader has heap buffer overflow due to improper validation of inputEPSS 0.5%CVE-2025-62602LOWFastDDS has heap buffer overflow in readData via Manipulated DATA Submessage when DDS Security is enabledEPSS 0.5%CVE-2026-58081CRITICALHeap based buffer overflow in iconv(3)EPSS 0.5%CVE-2026-22854MEDIUMFreeRDP has a heap-buffer-overflow in drive_process_irp_readEPSS 0.5%CVE-2023-0051HIGHHeap-based Buffer Overflow in vim/vimEPSS 0.5%CVE-2022-45115HIGHA buffer overflow vulnerability exists in the Attribute Arena functionality of Ichitaro 2022 1.0.1.57600. A specially crafted document can lEPSS 0.5%CVE-2024-53956HIGHPremiere Pro | Heap-based Buffer Overflow (CWE-122)EPSS 0.5%