Fallos del tipo CWE-416

5036 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-2021-34844HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2021-34840HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2023-36743HIGHWin32k Elevation of Privilege VulnerabilityEPSS 4.0%CVE-2021-34845HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2021-34841HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2021-42269HIGHAdobe Animate FLA File Parsing Use After Free Remote Code ExecutionEPSS 4.0%CVE-2023-29361HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 4.0%CVE-2022-21540MEDIUMVulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Hotspot). Supported versions thEPSS 3.9%CVE-2019-6776HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 9.5.0.20723. User interacEPSS 3.9%CVE-2023-27329HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.9%CVE-2023-27331HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.9%CVE-2023-27330HIGHFoxit PDF Reader XFA Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.9%CVE-2021-35983HIGHAdobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 3.9%CVE-2021-35981HIGHAdobe Acrobat Reader DC launchURL Use-After-Free Remote Code Execution VulnerabilityEPSS 3.9%CVE-2018-17635—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 3.9%CVE-2018-17637—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 3.9%CVE-2018-17662—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 3.9%CVE-2018-17632—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 3.9%CVE-2018-17661—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 3.9%CVE-2018-17667—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 3.9%