Falhas do tipo CWE-122

3.189 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-2023-7158HIGHMicroPython objslice.c slice_indices heap-based overflowEPSS 1.2%CVE-2023-36793HIGHVisual Studio Remote Code Execution VulnerabilityEPSS 1.2%CVE-2023-35350HIGHWindows Active Directory Certificate Services (AD CS) Remote Code Execution VulnerabilityEPSS 1.2%CVE-2024-3209MEDIUMUPX bele.h get_ne64 heap-based overflowEPSS 1.2%CVE-2025-26668HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.2%CVE-2020-25667—TIFFGetProfiles() in /coders/tiff.c calls strstr() which causes a large out-of-bounds read when it searches for `"dc:format=\"image/dng\"` wEPSS 1.2%CVE-2022-40660HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 1.2%CVE-2022-24672HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF644Cdw 10.02 EPSS 1.2%CVE-2020-27829—A heap based buffer overflow in coders/tiff.c may result in program crash and denial of service in ImageMagick before 7.0.10-45.EPSS 1.2%CVE-2024-7272MEDIUMFFmpeg swresample.c fill_audiodata heap-based overflowEPSS 1.2%CVE-2025-49666HIGHWindows Server Setup and Boot Event Collection Remote Code Execution VulnerabilityEPSS 1.2%CVE-2023-2804MEDIUMA heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrgext.c file. The vulneEPSS 1.2%CVE-2023-5344MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.2%CVE-2023-21799HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.2%CVE-2024-4559HIGHHeap buffer overflow in WebAudio in Google Chrome prior to 124.0.6367.155 allowed a remote attacker to potentially exploit heap corruption vEPSS 1.2%CVE-2022-1286MEDIUMheap-buffer-overflow in mrb_vm_exec in mruby/mruby in mruby/mrubyEPSS 1.2%CVE-2023-24897HIGH.NET, .NET Framework, and Visual Studio Remote Code Execution VulnerabilityEPSS 1.2%CVE-2025-14905HIGH389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflowEPSS 1.2%CVE-2020-13494MEDIUMA heap overflow vulnerability exists in the Pixar OpenUSD 20.05 parsing of compressed string tokens in binary USD files. A specially craftedEPSS 1.2%CVE-2022-20737HIGHCisco Adaptive Security Appliance Software Clientless SSL VPN Heap Overflow VulnerabilityEPSS 1.2%