Fallos del tipo CWE-787
5145 resultadosEscrita fora dos limites de memória
Ocorre quando um programa escreve dados em uma posição de memória fora do intervalo alocado para um buffer, array ou estrutura. O atacante aproveita para sobrescrever dados adjacentes (variáveis, ponteiros, pilha de retorno), alterando o comportamento da aplicação ou assumindo controle total do sistema.
Ejemplo
Um programa lê 256 bytes de entrada do usuário e copia para um buffer de 64 bytes sem validação. O atacante envia 300 bytes, que transbordam o buffer e sobrescrevem o endereço de retorno na pilha, permitindo execução de código arbitrário.
Cómo mitigar
Sempre validar tamanho de entrada contra o limite do buffer antes de copiar (usar strncpy, snprintf em vez de strcpy, sprintf). Em linguagens modernas, usar estruturas bounds-checked (Rust, C# arrays) ou linters que detectem padrões perigosos.
CVE-2021-42024—A vulnerability has been identified in Simcenter STAR-CCM+ Viewer (All versions < 2021.3.1). The starview+.exe application lacks proper valiEPSS 0.8%CVE-2022-31737CRITICALA malicious webpage could have caused an out-of-bounds write in WebGL, leading to memory corruption and a potentially exploitable crash. ThiEPSS 0.8%CVE-2021-44446—A vulnerability has been identified in JT Utilities (All versions < V13.0.3.0), JTTK (All versions < V11.0.3.0). JTTK library in affected prEPSS 0.8%CVE-2021-44430—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2024-10487HIGHOut of bounds write in Dawn in Google Chrome prior to 130.0.6723.92 allowed a remote attacker to perform out of bounds memory access via a cEPSS 0.8%CVE-2021-44434—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2021-44437—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2021-44438—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2021-44441—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2021-44443—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2021-44449—A vulnerability has been identified in JT Utilities (All versions < V12.8.1.1), JTTK (All versions < V10.8.1.1). JTTK library in affected prEPSS 0.8%CVE-2020-3415HIGHCisco NX-OS Software Data Management Engine Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-34610HIGHAn issue was discovered json-io thru 4.14.0 allows attackers to cause a denial of service or other unspecified impacts via crafted object thEPSS 0.8%CVE-2022-2043HIGHMOXA NPort 5110 Out-of-bounds WriteEPSS 0.8%CVE-2022-40651HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Ansys SpaceClaim 2022 R1. User interactionEPSS 0.8%CVE-2022-40658HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 0.8%CVE-2024-5696HIGHBy manipulating the text in an `<input>` tag, an attacker could have caused corrupt memory leading to a potentially exploitable crash.EPSS 0.8%CVE-2024-42815CRITICALIn the TP-Link RE365 V1_180213, there is a buffer overflow vulnerability due to the lack of length verification for the USER_AGENT field in EPSS 0.8%CVE-2025-20654CRITICALIn wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no EPSS 0.8%CVE-2026-64608CRITICALApache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip pathsEPSS 0.8%