Fallos del tipo CWE-416

5043 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2021-41536—A vulnerability has been identified in Solid Edge SE2021 (All versions < SE2021MP8). The affected application contains a use-after-free vulnEPSS 1.2%CVE-2021-41537—A vulnerability has been identified in Solid Edge SE2021 (All versions < SE2021MP8). The affected application contains a use-after-free vulnEPSS 1.2%CVE-2023-40187HIGHUse-After-Free in FreeRDPEPSS 1.2%CVE-2019-6556—When processing project files, the application (Omron CX-Programmer v9.70 and prior and Common Components January 2019 and prior) fails to cEPSS 1.2%CVE-2020-25632—A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without EPSS 1.2%CVE-2023-3421HIGHUse after free in Media in Google Chrome prior to 114.0.5735.198 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 1.2%CVE-2023-21808HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 1.1%CVE-2024-38053HIGHWindows Layer-2 Bridge Network Driver Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-42530CRITICALNGINX Open-Source ngx_http_v3_module vulnerabilityEPSS 1.1%CVE-2024-49576HIGHA use-after-free vulnerability exists in the way Foxit Reader 2024.3.0.26795 handles a checkbox CBF_Widget object. A specially crafted JavasEPSS 1.1%CVE-2025-29792HIGHMicrosoft Office Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2022-28678HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%CVE-2023-6347HIGHUse after free in Mojo in Google Chrome prior to 119.0.6045.199 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 1.1%CVE-2022-28674HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%CVE-2022-1796MEDIUMUse After Free in vim/vimEPSS 1.1%CVE-2022-28669HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%CVE-2022-28679HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%CVE-2022-28671HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%CVE-2022-28673HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%CVE-2022-28680HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.1%