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-2026-10747CRITICALIBM MQ Appliance is affected by a heap buffer overflow vulnerability in protocol message processingEPSS 0.9%CVE-2024-40763HIGHHeap-based buffer overflow vulnerability in the SonicWall SMA100 SSLVPN due to the use of strcpy. This allows remote authenticated attackersEPSS 0.9%CVE-2024-21778HIGHA heap-based buffer overflow vulnerability exists in the configuration file mib_init_value_array functionality of Realtek rtl819x Jungle SDKEPSS 0.9%CVE-2021-32959HIGHAVEVA SuiteLink Server Buffer OverflowEPSS 0.9%CVE-2024-28231CRITICALManipulated DATA Submessage causes a heap-buffer-overflow errorEPSS 0.9%CVE-2023-4322HIGHHeap-based Buffer Overflow in radareorg/radare2EPSS 0.9%CVE-2024-32605HIGHHDF5 Library through 1.14.3 has a heap-based buffer over-read in H5VM_memcpyvv in H5VM.c (called from H5D__compact_readvv in H5Dcompact.c).EPSS 0.9%CVE-2025-54113HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-50129HIGHA memory corruption vulnerability exists in the PCX Image Decoding functionality of the SAIL Image Decoding Library v0.9.8. When decoding thEPSS 0.9%CVE-2022-1061HIGHHeap Buffer Overflow in parseDragons in radareorg/radare2EPSS 0.9%CVE-2025-53085HIGHA memory corruption vulnerability exists in the PSD RLE Decoding functionality of the SAIL Image Decoding Library v0.9.8. When decompressingEPSS 0.9%CVE-2023-32138HIGHD-Link DAP-1360 webproc Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.9%CVE-2022-40661HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 0.9%CVE-2023-32047HIGHPaint 3D Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-53853CRITICALA heap-based buffer overflow vulnerability exists in the ISHNE parsing functionality of The Biosig Project libbiosig 3.9.0 and Master BranchEPSS 0.9%CVE-2026-96202HIGHWindows Raw Image Extension Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-53511CRITICALA heap-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch EPSS 0.9%CVE-2026-100210HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-97741HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-100220HIGHWindows Media Video Decoder Remote Code Execution VulnerabilityEPSS 0.9%