Falhas do tipo CWE-122

3.202 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-2026-25749MEDIUMHeap Overflow in VimEPSS 0.2%CVE-2026-30985HIGHiccDEV has a heap-based buffer overflow write in CIccMatrixMath::SetRange()EPSS 0.2%CVE-2025-9458HIGHPRT File Parsing Memory Corruption VulnerabilityEPSS 0.2%CVE-2026-40183MEDIUMImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit floatEPSS 0.2%CVE-2026-31796HIGHiccDEV has a heap-based buffer overflow in icCurvesFromXml()EPSS 0.2%CVE-2026-45130MEDIUMVim: Heap Buffer Overflow in spell file loadingEPSS 0.2%CVE-2026-15506HIGHSecureAge CatchPulse Driver saappctl.sys heap-based overflowEPSS 0.2%CVE-2024-3758MEDIUMHmdfs has a heap buffer overflow vulnerabilityEPSS 0.2%CVE-2026-6846HIGHBinutils: binutils: arbitrary code execution via malformed xcoff object file processingEPSS 0.2%CVE-2026-94424CRITICALMoore Threads MTT S80 Driver Package IOCTL mtdispkm64.sys sub_140001000 heap-based overflowEPSS 0.2%CVE-2024-27374MEDIUMAn issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_EPSS 0.2%CVE-2022-38701MEDIUMIPC in communication subsystem has a heap overflow vulnerability. Local attackers can trigger a heap overflow and get network sensitive information.EPSS 0.2%CVE-2026-43906HIGHOpenImageIO: HEIF Heap overflowEPSS 0.2%CVE-2024-11608HIGHA maliciously crafted SKP file, when linked or imported into Autodesk Revit, can be used to cause a Heap-based Overflow. A malicious actor cEPSS 0.2%CVE-2026-2646MEDIUMHeap buffer overflow in session parsing with wolfSSL_d2i_SSL_SESSION() functionEPSS 0.2%CVE-2025-63927MEDIUMA heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, thEPSS 0.2%CVE-2026-18497HIGHThe nothings stb TrueType library contains a heap buffer overflow vulnerabilityEPSS 0.2%CVE-2026-28421MEDIUMVim has a heap-buffer-overflow and a segmentation faultEPSS 0.2%CVE-2025-12840HIGHAcademy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-21678HIGHiccDEV has heap-buffer-overflow vulnerability on IccTagXml()EPSS 0.2%