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-2024-20683HIGHWin32k Elevation of Privilege VulnerabilityEPSS 4.2%CVE-2019-6734—This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit PhantomPDF. User interactiEPSS 4.2%CVE-2026-20871HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 4.2%CVE-2019-6730—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader. User interaction is requirEPSS 4.2%CVE-2019-6727—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader. User interaction is requirEPSS 4.2%CVE-2021-21033HIGHAcrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 4.1%CVE-2021-21021HIGHAcrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 4.1%CVE-2021-21028HIGHAcrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 4.1%CVE-2021-21035HIGHAcrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 4.1%CVE-2019-13320HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 9.5.0.20723. User interactionEPSS 4.1%CVE-2019-13319HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 9.5.0.20723. User interactionEPSS 4.1%CVE-2020-15637LOWThis vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PhantomPDF 9.7.1.29511. UserEPSS 4.1%CVE-2022-23608HIGHUse after free in PJSIPEPSS 4.1%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-2021-34844HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2023-36743HIGHWin32k Elevation of Privilege VulnerabilityEPSS 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-2021-34846HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2021-34851HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%CVE-2021-34837HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 4.0%