Falhas do tipo CWE-122

3.189 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-2020-27752—A flaw was found in ImageMagick in MagickCore/quantum-private.h. An attacker who submits a crafted file that is processed by ImageMagick couEPSS 1.1%CVE-2023-21740HIGHWindows Media Remote Code Execution VulnerabilityEPSS 1.1%CVE-2021-21946CRITICALTwo heap-based buffer overflow vulnerabilities exists in the JPEG-JFIF lossless Huffman image parser functionality of Accusoft ImageGear 19.EPSS 1.1%CVE-2021-21947CRITICALTwo heap-based buffer overflow vulnerabilities exists in the JPEG-JFIF lossless Huffman image parser functionality of Accusoft ImageGear 19.EPSS 1.1%CVE-2021-21944CRITICALTwo heap-based buffer overflow vulnerabilities exist in the TIFF parser functionality of Accusoft ImageGear 19.10. A specially-crafted file EPSS 1.1%CVE-2021-21945CRITICALTwo heap-based buffer overflow vulnerabilities exist in the TIFF parser functionality of Accusoft ImageGear 19.10. A specially-crafted file EPSS 1.1%CVE-2025-33066HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2024-22211LOWFreeRDP integer Overflow leading to Heap OverflowEPSS 1.1%CVE-2026-5201HIGHGdk-pixbuf: gdk-pixbuf: denial of service via heap-based buffer overflow when processing a specially crafted jpeg imageEPSS 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-2021-31954HIGHWindows Common Log File System Driver Elevation of Privilege 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-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-2023-21695HIGHMicrosoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2024-32038CRITICALWazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-29963HIGHWindows Media Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-29964HIGHWindows Media Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-27752HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 1.0%