Weaknesses of type CWE-122

3,202 results

Transbordamento de heap (heap overflow)

Ocorre quando um programa escreve dados além dos limites de um buffer alocado dinamicamente na memória heap, sobrescrevendo dados adjacentes ou metadados do alocador. Isso permite que um atacante corrompa estruturas críticas, execute código arbitrário ou cause travamento da aplicação.

Example

Uma função recebe um tamanho de entrada sem validar e copia para um buffer: `strcpy(heap_buffer, user_input)` sem verificar se user_input cabe. Se o usuário enviar 1000 bytes para um buffer de 256, o overflow sobrescreve estruturas próximas no heap e pode ser explorado para RCE.

How to mitigate

Use funções seguras de cópia (`strncpy`, `strlcpy`), valide e limite o tamanho da entrada antes de copiar, e considere usar linguagens com gerenciamento automático de memória ou ferramentas como AddressSanitizer durante testes para detectar overflows.

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%