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-2026-68515HIGHOpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel unionEPSS 0.2%CVE-2026-39113MEDIUMBuffer Overflow vulnerability in SQLite affected version source snapshots/builds containing Fossil check-in 8bdc0d485e3ad0c7a1e818da66f10695EPSS 0.2%CVE-2026-9541MEDIUMSquirrel Cnut File sqobject.cpp ReadObject heap-based overflowEPSS 0.2%CVE-2025-9457HIGHPRT File Parsing Memory Corruption VulnerabilityEPSS 0.2%CVE-2025-53182MEDIUMNull pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function sEPSS 0.2%CVE-2025-53183MEDIUMNull pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function sEPSS 0.2%CVE-2025-53184MEDIUMNull pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function sEPSS 0.2%CVE-2026-13976MEDIUMInsufficient data validation in Storage in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer pEPSS 0.2%CVE-2022-34454MEDIUMDell PowerScale OneFS, versions 8.2.x-9.3.x, contain a heap-based buffer overflow. A local privileged malicious user could potentially exploEPSS 0.2%CVE-2025-53179MEDIUMNull pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function sEPSS 0.2%CVE-2025-53180MEDIUMNull pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function sEPSS 0.2%CVE-2025-53181MEDIUMNull pointer dereference vulnerability in the PDF preview module Impact: Successful exploitation of this vulnerability may affect function sEPSS 0.2%CVE-2026-40169MEDIUMImageMagick: Heap buffer overflow (WRITE) in the YAML and JSON encodersEPSS 0.2%CVE-2026-28420MEDIUMVim has Heap-based Buffer Overflow and OOB Read in :terminalEPSS 0.2%CVE-2026-40310MEDIUMImageMagick: Heap out-of-bounds write in JP2 encoderEPSS 0.2%CVE-2026-2467CRITICALHeap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.EPSS 0.2%CVE-2026-5405HIGHHeap-based Buffer Overflow in WiresharkEPSS 0.2%CVE-2026-5403HIGHHeap-based Buffer Overflow in WiresharkEPSS 0.2%CVE-2026-25205HIGHHeap-based buffer overflow vulnerability in Samsung Open Source Escargot allows out-of-bounds write.This issue affects Escargot:commit hash EPSS 0.2%CVE-2026-25576MEDIUMImageMagick: Out of bounds read in multiple coders read raw pixel dataEPSS 0.2%