Falhas do tipo CWE-122

3.734 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-2024-33429HIGHBuffer-Overflow vulnerability at pcm_convert.h:513 of phiola v2.0-rc22 allows a remote attacker to execute arbitrary code via a crafted .wavEPSS 1.1%CVE-2025-29963HIGHWindows Media Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-97814CRITICALWindows Text Shaping Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-29964HIGHWindows Media Remote Code Execution VulnerabilityEPSS 1.1%CVE-2022-4584MEDIUMAxiomatic Bento4 mp42aac heap-based overflowEPSS 1.1%CVE-2024-43480MEDIUMAzure Service Fabric for Linux Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-70096CRITICALWindows Rich Text Edit Control Remote Code Execution VulnerabilityEPSS 1.1%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-2021-21947CRITICALTwo heap-based buffer overflow vulnerabilities exists in the JPEG-JFIF lossless Huffman image parser functionality of Accusoft ImageGear 19.EPSS 1.1%CVE-2021-21945CRITICALTwo heap-based buffer overflow vulnerabilities exist in the TIFF parser functionality of Accusoft ImageGear 19.10. A specially-crafted file EPSS 1.1%CVE-2026-20922HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 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-2021-21946CRITICALTwo heap-based buffer overflow vulnerabilities exists in the JPEG-JFIF lossless Huffman image parser functionality of Accusoft ImageGear 19.EPSS 1.1%CVE-2026-97813MEDIUMWindows Hyper-V Information Disclosure VulnerabilityEPSS 1.1%CVE-2026-97817MEDIUMRole: DNS Server Information Disclosure VulnerabilityEPSS 1.1%CVE-2024-22211LOWFreeRDP integer Overflow leading to Heap OverflowEPSS 1.1%CVE-2025-48824HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-91104CRITICALHP Linux Imaging and Printing (HPLIP) Software– Multiple VulnerabilitiesEPSS 1.1%CVE-2026-70153CRITICALMicrosoft PostScript Printer Driver Remote Code Execution VulnerabilityEPSS 1.1%