Fallos del tipo CWE-122

3210 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-2026-48994MEDIUMImageMagick: Heap Buffer Over-Write in MAT decoder on 32-bit systemsEPSS 0.4%CVE-2025-70103HIGHHeap buffer overflow vulnerability in libjxl 0.12.0 via crafted PBM images to the jxl::extras::DecodeImagePNM function in file lib/extras/deEPSS 0.4%CVE-2025-26416CRITICALIn initializeSwizzler of SkBmpStandardCodec.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to rEPSS 0.4%CVE-2023-32643MEDIUMA flaw was found in GLib. The GVariant deserialization code is vulnerable to a heap buffer overflow introduced by the fix for CVE-2023-32665EPSS 0.4%CVE-2023-6349MEDIUMHeap overflow in libvpxEPSS 0.4%CVE-2026-40364HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-47635HIGHMicrosoft Outlook and Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2022-42405HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is reEPSS 0.4%CVE-2026-69479HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-54122HIGHWindows GDI+ Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-69638HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40363HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-32221HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-20809HIGHWindows Kernel Memory Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2024-11580HIGHLuxion KeyShot ABC File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-58542HIGHWindows Media Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-58530HIGHWindows Resilient File System (ReFS) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-34865CRITICALOut-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confiEPSS 0.4%CVE-2026-26200HIGHHDF5 Affected by H5T__conv_struct_opt Heap Buffer OverflowEPSS 0.4%CVE-2024-20783HIGHAdobe Indesign 2024 RLE File Parsing Heap Memory CorruptionEPSS 0.4%