Fallos del tipo CWE-416

6178 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-2022-21540MEDIUMVulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Hotspot). Supported versions thEPSS 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-2019-6730—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader. User interaction is requirEPSS 4.2%CVE-2026-20871HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 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-2022-27800HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2022-27801HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2022-27802HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2022-28237HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2022-28235HIGHAdobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2022-27795HIGHAdobe Acrobat Reader DC AcroForm isDefaultChecked Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2022-27797HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 4.1%CVE-2023-43000HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, SEPSS 4.0%KEVCVE-2022-23608HIGHUse after free in PJSIPEPSS 4.0%CVE-2026-45447HIGHHeap Use-After-Free in the PKCS7_verify() FunctionEPSS 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-2021-34832HIGHThis 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%