Fallos del tipo CWE-122

3213 resultados

Estouro de heap

É quando o código escreve dados além dos limites de um buffer alocado no heap (memória dinâmica), sobrescrevendo dados de outras estruturas adjacentes. Esse estouro pode corromper metadados do heap, variáveis vizinhas ou objetos do programa, permitindo execução de código arbitrário ou negação de serviço.

Ejemplo

Um servidor web recebe uma string de tamanho arbitrário e a copia para um buffer de 256 bytes sem validar o comprimento (ex: strcpy em C). Se o atacante enviar 500 bytes, o restante escreve além da zona alocada, corrompendo estruturas próximas e potencialmente ganhando controle do fluxo.

Cómo mitigar

Use funções seguras (strncpy, strlcpy, snprintf em C) que respeitam limites de tamanho; valide e sanitize entrada do usuário antes de copiar; ative proteções do SO (ASLR, DEP/NX); use linguagens de memória segura quando possível; aplique verificações de limites em loops de cópia.

CVE-2026-32093HIGHWindows Function Discovery Service (fdwsd.dll) Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-47747HIGHstable-diffusion.cpp has a Heap-based Buffer OverflowEPSS 0.2%CVE-2026-81355HIGHVirtual Hard Disk (VHD) Miniport Driver Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-69563HIGHWindows Program Compatibility Assistant Service Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2024-0257LOWRoboDK Heap-based Buffer OverflowEPSS 0.2%CVE-2025-31177MEDIUMGnuplot: gnuplot heap-buffer overflow on utf8_copy_oneEPSS 0.2%CVE-2026-75141HIGHFFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC MuxingEPSS 0.2%CVE-2025-64784HIGHDNG SDK | Heap-based Buffer Overflow (CWE-122)EPSS 0.2%CVE-2026-75144HIGHFFmpeg Heap Buffer Overflow in VC-2/Dirac RTP PacketizerEPSS 0.2%CVE-2026-88806HIGHlibX11 XkbGetMap Reply Heap-based Buffer OverflowEPSS 0.2%CVE-2026-75665HIGHBridge | Heap-based Buffer Overflow (CWE-122)EPSS 0.2%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-2026-31796HIGHiccDEV has a heap-based buffer overflow in icCurvesFromXml()EPSS 0.2%CVE-2026-40183MEDIUMImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit floatEPSS 0.2%CVE-2025-9458HIGHPRT File Parsing Memory Corruption VulnerabilityEPSS 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-2026-45130MEDIUMVim: Heap Buffer Overflow in spell file loadingEPSS 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%