Falhas do tipo CWE-122

3.737 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2026-70147CRITICALMicrosoft PostScript Printer Driver Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-70153CRITICALMicrosoft PostScript Printer Driver Remote Code Execution VulnerabilityEPSS 1.1%CVE-2021-3756MEDIUMHeap-based Buffer Overflow in hoene/libmysofaEPSS 1.1%CVE-2021-33007—A heap-based buffer overflow in Delta Electronics TPEditor: v1.98.06 and prior may be exploited by processing a specially crafted project fiEPSS 1.1%CVE-2025-47998HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2023-4264HIGHPotential buffer overflow vulnerabilities in the Zephyr Bluetooth subsystemEPSS 1.1%CVE-2021-31954HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2025-27752HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 1.1%CVE-2024-33698CRITICALA vulnerability has been identified in Opcenter Quality (All versions < V2406), Opcenter RDnL (All versions < V2410), SIMATIC PCS neo V4.0 (EPSS 1.1%CVE-2026-67868CRITICALA heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateMonitoredItems processEPSS 1.1%CVE-2026-83578CRITICALMicrosoft PowerShell Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-83519CRITICALWindows Error Reporting Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-70157CRITICALWindows System Information Console Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-83517CRITICALMicrosoft Windows Media Foundation Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-21395HIGHMicrosoft Access Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-100222CRITICALNetwork Policy Server (NPS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2023-21695HIGHMicrosoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2023-32307HIGHheap-over-flow and integer-overflow in sofia-sipEPSS 1.1%CVE-2021-37199—A vulnerability has been identified in SINUMERIK 808D (All versions), SINUMERIK 828D (All versions < V4.95). Affected devices don't process EPSS 1.1%CVE-2026-96320CRITICALWindows DHCP Server Remote Code Execution VulnerabilityEPSS 1.1%