Falhas do tipo CWE-122

3.188 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-2024-26159HIGHMicrosoft ODBC Driver Remote Code Execution VulnerabilityEPSS 1.9%CVE-2017-6037—A Heap-Based Buffer Overflow issue was discovered in Wecon Technologies LEVI Studio HMI Editor before 1.8.1. This vulnerability causes a bufEPSS 1.9%CVE-2017-16717—A Heap-based Buffer Overflow issue was discovered in WECON LeviStudio HMI. The heap-based buffer overflow vulnerability has been identified,EPSS 1.9%CVE-2023-29363CRITICALWindows Pragmatic General Multicast (PGM) Remote Code Execution VulnerabilityEPSS 1.9%CVE-2021-34313—A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Tiff_loader.dll liEPSS 1.9%CVE-2018-1124HIGHprocps-ng before version 3.3.15 is vulnerable to multiple integer overflows leading to a heap corruption in file2strvec function. This allowEPSS 1.9%CVE-2022-43602HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 1.9%CVE-2021-34938HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2018-14794—Fuji Electric Alpha5 Smart Loader Versions 3.7 and prior. The device does not perform a check on the length/size of a project file before coEPSS 1.9%CVE-2026-41096CRITICALWindows DNS Client Remote Code Execution VulnerabilityEPSS 1.9%CVE-2020-13572CRITICALA heap overflow vulnerability exists in the way the GIF parser decodes LZW compressed streams in Accusoft ImageGear 19.8. A specially crafteEPSS 1.9%CVE-2025-59295HIGHWindows URL Parsing Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-30017HIGHWindows Hyper-V Remote Code Execution VulnerabilityEPSS 1.9%CVE-2016-8654HIGHA heap-buffer overflow vulnerability was found in QMFB code in JPC codec caused by buffer being allocated with too small size. jasper versioEPSS 1.9%CVE-2025-49683HIGHMicrosoft Virtual Hard Disk Remote Code Execution VulnerabilityEPSS 1.9%CVE-2020-25843HIGHCHANGING Inc. NHIServiSignAdapter Windows Versions - Heap OverflowEPSS 1.9%CVE-2021-34317—A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The BMP_loader.dll libEPSS 1.9%CVE-2021-34312—A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Tiff_loader.dll liEPSS 1.9%CVE-2013-7353MEDIUMInteger overflow in the png_set_unknown_chunks function in libpng/pngset.c in libpng before 1.5.14beta08 allows context-dependent attackers EPSS 1.9%CVE-2021-41253MEDIUMPossible heap buffer overflow when using zycore string functions in formatter hooksEPSS 1.9%