Fallos del tipo CWE-416

5038 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-2025-6424CRITICALUse-after-free in FontFaceSetEPSS 3.6%CVE-2023-21688HIGHNT OS Kernel Elevation of Privilege VulnerabilityEPSS 3.6%CVE-2018-17621—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interactioEPSS 3.6%CVE-2020-9567HIGHAdobe Bridge versions 10.0.1 and earlier version have an use after free vulnerability. Successful exploitation could lead to arbitrary code EPSS 3.6%CVE-2025-9478HIGHUse after free in ANGLE in Google Chrome prior to 139.0.7258.154 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 3.6%CVE-2026-45447HIGHHeap Use-After-Free in the PKCS7_verify() FunctionEPSS 3.6%CVE-2019-6757HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.16811. User interactionEPSS 3.6%CVE-2023-35380HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 3.5%CVE-2024-30035HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 3.5%CVE-2024-22252CRITICALUse-after-free vulnerabilityEPSS 3.5%CVE-2021-28553HIGHAdobe Acrobat Reader use-after-free vulnerability could lead to arbitrary code executionEPSS 3.5%CVE-2023-21552HIGHWindows GDI Elevation of Privilege VulnerabilityEPSS 3.5%CVE-2022-28242HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.5%CVE-2022-34225HIGHAdobe Acrobat Reader DC AcroForm exportValues Use-After-Free Remote Code Execution VulnerabilityEPSS 3.5%CVE-2020-9566HIGHAdobe Bridge versions 10.0.1 and earlier version have an use after free vulnerability. Successful exploitation could lead to arbitrary code EPSS 3.5%CVE-2019-5126HIGHAn exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit PDF Reader, version 9.7.0.29435. A specially crafted PDEPSS 3.5%CVE-2019-6762HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit PhantomPDF 9.4.1.16828. User interEPSS 3.5%CVE-2019-6761HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.0.16811. User interactiEPSS 3.5%CVE-2021-34831HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.4.37651. User interactioEPSS 3.5%CVE-2021-34848HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 3.5%