Weaknesses of type CWE-787

5,142 results

Escrita fora dos limites da memória

Ocorre quando o código escreve dados em um endereço de memória fora do intervalo alocado para uma estrutura (array, buffer, objeto). O programa não valida o tamanho ou índice antes de escrever, permitindo sobrescrever memória adjacente — causando corrupção de dados, queda da aplicação ou execução arbitrária de código.

Example

Um formulário web que copia o valor de um campo do usuário para um buffer de 64 bytes sem verificar o comprimento: se o atacante enviar 200 caracteres, a escrita invade a memória vizinha e pode sobrescrever um ponteiro de função ou variável crítica.

How to mitigate

Sempre validar tamanhos de entrada antes de copiar (usar `strncpy` em vez de `strcpy`, ou bibliotecas seguras como `bounds-checking`); usar linguagens com verificação automática de limites (Java, Rust); aplicar testes de fuzzing e análise estática de código para detectar escritas desprotegidas.

CVE-2021-46569HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-34898HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46581HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-46574HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-34899HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46576HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-46572HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-46568HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-44001—A vulnerability has been identified in JT2Go (All versions < V13.2.0.5), Teamcenter Visualization (All versions < V13.2.0.5). The DL180pdfl.EPSS 2.0%CVE-2023-20869HIGHVMware Workstation (17.x) and VMware Fusion (13.x) contain a stack-based buffer-overflow vulnerability that exists in the functionality for EPSS 2.0%CVE-2021-46564HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2022-41220CRITICALmd2roff 1.9 has a stack-based buffer overflow via a Markdown file, a different vulnerability than CVE-2022-34913. NOTE: the vendor's positioEPSS 2.0%CVE-2021-34918HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-34915HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2017-20149CRITICALThe Mikrotik RouterOS web server allows memory corruption in releases before Stable 6.38.5 and Long-term 6.37.5, aka Chimay-Red. A remote anEPSS 2.0%CVE-2019-5084HIGHAn exploitable heap out-of-bounds write vulnerability exists in the TIF-parsing functionality of LEADTOOLS 20. A specially crafted TIF imageEPSS 2.0%CVE-2024-20727HIGH[TianfuCup] out-of-bounds access vulnerability when parsing jpeg2000EPSS 2.0%CVE-2021-34873HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-34875HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46818HIGHAdobe Media Encoder M4A file memory corruption vulnerability could lead to remote code executionEPSS 2.0%