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-2023-24868HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.3%CVE-2023-24907HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.3%CVE-2023-23406HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.3%CVE-2023-24867HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.3%CVE-2023-24913HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.3%CVE-2025-21273HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.3%CVE-2025-21282HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.3%CVE-2025-21266HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.3%CVE-2025-21286HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.3%CVE-2021-24042CRITICALThe calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.EPSS 1.3%CVE-2026-25588HIGHRedisTimeSeries RESTORE invalid memory access may allow remote code executionEPSS 1.3%CVE-2024-3204HIGHc-blosc2 ndlz4x4.c ndlz4_decompress heap-based overflowEPSS 1.3%CVE-2020-28598HIGHAn out-of-bounds write vulnerability exists in the Admesh stl_fix_normal_directions() functionality of Prusa Research PrusaSlicer 2.2.0 and EPSS 1.3%CVE-2023-5344MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.3%CVE-2026-70031HIGHWindows iSCSI Denial of Service VulnerabilityEPSS 1.3%CVE-2026-83795HIGHWindows Internet Key Exchange (IKE) Extension Denial of Service VulnerabilityEPSS 1.3%CVE-2020-27249HIGHA specially crafted document can cause the document parser to copy data from a particular record type into a static-sized buffer within an oEPSS 1.3%CVE-2020-27247HIGHA specially crafted document can cause the document parser to copy data from a particular record type into a static-sized buffer within an oEPSS 1.3%CVE-2020-27248HIGHA specially crafted document can cause the document parser to copy data from a particular record type into a static-sized buffer within an oEPSS 1.3%CVE-2024-37987HIGHSecure Boot Security Feature Bypass VulnerabilityEPSS 1.3%