Falhas do tipo CWE-122

3.735 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-2025-20128MEDIUMClamAV OLE2 File Format Decryption Denial of Service VulnerabilityEPSS 1.8%CVE-2026-8631CRITICALHP Linux Imaging and Printing Software – Potential Escalation of Privilege and Arbitrary Code ExecutionEPSS 1.8%CVE-2025-21208HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2025-21200HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.8%CVE-2025-21190HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.8%CVE-2023-44429HIGHGStreamer AV1 Codec Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-26200HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-26205HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-26179HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-30077HIGHWindows OLE Remote Code Execution VulnerabilityEPSS 1.8%CVE-2021-3973HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.8%CVE-2024-34459HIGHAn issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout cEPSS 1.8%CVE-2021-44000—A vulnerability has been identified in JT2Go (All versions < V13.2.0.7), Solid Edge SE2021 (All versions < SE2021MP9), Solid Edge SE2022 (AlEPSS 1.8%CVE-2022-43601HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 1.8%CVE-2022-43600HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 1.8%CVE-2024-21795CRITICALA heap-based buffer overflow vulnerability exists in the .egi parsing functionality of The Biosig Project libbiosig 2.5.0 and Master Branch EPSS 1.8%CVE-2024-21333HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-21415HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-21335HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-21373HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.8%