Fallos del tipo CWE-416

5109 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-2021-3748—A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non dEPSS 0.5%CVE-2024-45063CRITICALMultiple issues in ctl(4) CAM Target LayerEPSS 0.5%CVE-2023-22402MEDIUMJunos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor flapsEPSS 0.5%CVE-2026-24677HIGHFreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264EPSS 0.5%CVE-2024-21439HIGHWindows Telephony Server Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2025-62555HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.5%CVE-2022-3297HIGHUse After Free in vim/vimEPSS 0.5%CVE-2025-7657HIGHUse after free in WebRTC in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.5%CVE-2026-61920MEDIUMWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-22857MEDIUMFreeRDP has a heap-use-after-free in irp_thread_funcEPSS 0.5%CVE-2026-6759HIGHUse-after-free in the Widget: Cocoa componentEPSS 0.5%CVE-2023-1213HIGHUse after free in Swiftshader in Google Chrome prior to 111.0.5563.64 allowed a remote attacker to potentially exploit heap corruption via aEPSS 0.5%CVE-2023-2458HIGHUse after free in ChromeOS Camera in Google Chrome on ChromeOS prior to 113.0.5672.114 allowed a remote attacker who convinced a user to engEPSS 0.5%CVE-2023-42093LOWFoxit PDF Reader Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 0.5%CVE-2025-53761HIGHMicrosoft PowerPoint Remote Code Execution VulnerabilityEPSS 0.5%CVE-2025-53738HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-16353CRITICALInvalid pointer in the DOM: Bindings (WebIDL) componentEPSS 0.5%CVE-2024-7528CRITICALIncorrect garbage collection interaction in IndexedDB could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox EPSS 0.5%CVE-2026-33416HIGHLIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`EPSS 0.5%CVE-2025-59227HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.5%