Weaknesses of type CWE-122

3,195 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-2026-71343HIGHWindows Remote Access Connection Manager Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-40398HIGHWindows Remote Desktop Services Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-70347HIGHWindows Installer Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-40407HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50309HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-73007HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72996HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62894HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-65786HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72993HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50679HIGHWindows Search Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-61932HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83983HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69592HIGHWindows Universal Disk Format File System Driver (UDFS) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-33837HIGHWindows TCP/IP Local Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62772HIGHWindows Container Isolation FS Filter Driver (unionfs.sys) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72992HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72995HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83988HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69284HIGHWindows DCOM Server Elevation of Privilege VulnerabilityEPSS 0.3%