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-2022-1437MEDIUMHeap-based Buffer Overflow in radareorg/radare2EPSS 0.8%CVE-2026-69623HIGHWindows HTTP Print Provider Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-68880HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69481HIGHWindows Enterprise App Management Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69271HIGHMicrosoft Standard XPS Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69826HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69875HIGHWindows NTFS Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-26111HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-68827HIGHWindows GDI+ Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69643HIGHWindows Spaceport.sys Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69423HIGHWindows USB Video Driver Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2025-47162HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-69346HIGHWindows Print Spooler Components Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-68876HIGHWindows Program Compatibility Assistant Service Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69681HIGHVirtual Hard Disk (VHD) Miniport Driver Elevation of Privilege VulernabilityEPSS 0.8%CVE-2026-69773HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69462HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-68894HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-67305CRITICALFreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via CliprdrEPSS 0.8%CVE-2026-69727HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.8%