Falhas do tipo CWE-122

3.190 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-2024-9632HIGHXorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerabilityEPSS 0.9%CVE-2025-48824HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-4264HIGHPotential buffer overflow vulnerabilities in the Zephyr Bluetooth subsystemEPSS 0.9%CVE-2026-22828HIGHA heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer Cloud 7.6.2 through 7.6.4, FortiManager Cloud 7.6.2 through 7.6.4 may aEPSS 0.9%CVE-2024-25048HIGHIBM MQ code executionEPSS 0.9%CVE-2024-29157CRITICALHDF5 through 1.14.3 contains a heap buffer overflow in H5HG_read, resulting in the corruption of the instruction pointer and causing denial EPSS 0.9%CVE-2025-47998HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-46426HIGHHeap-based Buffer Overflow vulnerability in gpac version 2.3-DEV-rev588-g7edc40fee-master, allows remote attackers to execute arbitrary codeEPSS 0.9%CVE-2025-50160HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-50164HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-50162HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-38172HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-25262HIGHtexlive-bin commit c515e was discovered to contain heap buffer overflow via the function ttfLoadHDMX:ttfdump. This vulnerability allows attaEPSS 0.9%CVE-2026-72959HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-26178HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2025-24797CRITICALMeshtastic incorrectly hands malformed packets leads to controlled buffer overflowEPSS 0.9%CVE-2024-43587MEDIUMMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-69769CRITICALWindows HTTP Print Provider Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-67643CRITICALMicrosoft SQL Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-38147HIGHWindows Miracast Wireless Display Remote Code Execution VulnerabilityEPSS 0.9%