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-2026-69824CRITICALMicrosoft Standard XPS Remote Code Execution VulnerabilityEPSS 1.0%CVE-2022-21214HIGHICSA-22-090-03 Fuji Electric Alpha5EPSS 1.0%CVE-2022-0713MEDIUMHeap-based Buffer Overflow in radareorg/radare2EPSS 1.0%CVE-2025-24057HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-1052HIGHMintty Sixel Image Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-53131HIGHWindows Media Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-50163HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2024-3207MEDIUMermig1979 Simd SimdMemoryStream.h ReadUnsigned heap-based overflowEPSS 1.0%CVE-2023-21782HIGH3D Builder Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-21780HIGH3D Builder Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-21792HIGH3D Builder Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-67191CRITICALXlight FTP Server < 3.9.5 Pre-Auth Heap Buffer Overflow via SSH ParserEPSS 1.0%CVE-2023-5908CRITICALHeap Based Buffer Overflow in PTC KEPServerExEPSS 1.0%CVE-2026-81642CRITICALHeap buffer overflow and possible Remote Code Execution when digesting DNSKEYEPSS 1.0%CVE-2023-39947HIGHAnother heap overflow in push_back_helperEPSS 1.0%CVE-2020-27250HIGHIn SoftMaker Software GmbH SoftMaker Office PlanMaker 2021 (Revision 1014), a specially crafted document can cause the document parser to coEPSS 1.0%CVE-2020-7852HIGHDaviewIndy Heap Overflow VulnerabilitiesEPSS 1.0%CVE-2023-21790HIGH3D Builder Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-47289HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 1.0%CVE-2018-4833—A vulnerability has been identified in RFID 181EIP (All versions), RUGGEDCOM Win (V4.4, V4.5, V5.0, and V5.1), SCALANCE X-200 switch family EPSS 1.0%