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-2024-33877HIGHHDF5 Library through 1.14.3 has a heap-based buffer overflow in H5T__conv_struct_opt in H5Tconv.c.EPSS 0.9%CVE-2026-70282HIGHMicrosoft Office Outlook Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-70287HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-83778HIGHMicrosoft Internet Messaging API Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-70301HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-70268HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-70302HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-70256HIGHMicrosoft Office Outlook Remote Code Execution VulnerabilityEPSS 0.9%CVE-2020-15196HIGHHeap buffer overflow in TensorflowEPSS 0.9%CVE-2022-43648HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 1.20B03 routers.EPSS 0.9%CVE-2026-97756HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-2920HIGHGStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.9%CVE-2019-14816MEDIUMThere is heap-based buffer overflow in kernel, all versions up to, excluding 5.3, in the marvell wifi chip driver in Linux kernel, that alloEPSS 0.9%CVE-2025-57803HIGHImageMagick (WriteBMPImage): 32-bit integer overflow when writing BMP scanline stride → heap buffer overflowEPSS 0.9%CVE-2026-102857HIGHMicrosoft Office Visio Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-9632HIGHXorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerabilityEPSS 0.9%CVE-2026-96952HIGHMicrosoft Windows Media Foundation Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-22828HIGHA heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer Cloud 7.6.2 through 7.6.4, FortiManager Cloud 7.6.2 through 7.6.4 may aEPSS 0.9%CVE-2026-97769HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-26111HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%