Fallos del tipo CWE-416

5134 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-2021-34952HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34965HIGHFoxit PDF Editor Squiggly Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34974HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34955HIGHFoxit PDF Editor Stamp Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34961HIGHFoxit PDF Editor Ink Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2024-12548LOWTungsten Automation Power PDF JP2 File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.3%CVE-2021-34975HIGHFoxit PDF Reader transitionToState Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34956HIGHFoxit PDF Editor Underline Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34964HIGHFoxit PDF Editor Polygon Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34958HIGHFoxit PDF Editor Text Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34954HIGHFoxit PDF Editor StrikeOut Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34962HIGHFoxit PDF Editor Caret Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34948HIGHFoxit PDF Reader Square Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34963HIGHFoxit PDF Editor PolyLine Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-45476HIGHMicrosoft Azure Network Adapter Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-48011HIGHGPAC v2.3-DEV-rev566-g50c2ab06f-master was discovered to contain a heap-use-after-free via the flush_ref_samples function at /gpac/src/isomeEPSS 0.3%CVE-2026-50374MEDIUMWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-27492HIGHWindows Secure Channel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-8390HIGHUse-after-free in the JavaScript: WebAssembly componentEPSS 0.3%CVE-2026-19154HIGHUse after free in Skia in Google Chrome on Android prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer procesEPSS 0.3%