Fallos del tipo CWE-416

5110 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-2026-20920HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2026-43686HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27,EPSS 0.5%CVE-2023-42098LOWFoxit PDF Reader Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 0.5%CVE-2023-21724HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2024-3187MEDIUMThis issue tracks two CWE-416 Use After Free (UAF) and one CWE-415 Double Free vulnerabilities in Goahead versions <= 6.0.0. These are causeEPSS 0.5%CVE-2024-43570MEDIUMWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2023-51568LOWKofax Power PDF OXPS File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.5%CVE-2018-6555—The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows loEPSS 0.5%CVE-2026-7531LOWUse-after-free in PQC hybrid key-share handlingEPSS 0.5%CVE-2026-24676HIGHFreeRDP has a heap-use-after-free in audio_format_compatibleEPSS 0.5%CVE-2026-24675HIGHFreeRDP has a Heap-use-after-free in urb_select_interfaceEPSS 0.5%CVE-2026-24491HIGHFreeRDP has a heap-use-after-free in video_timerEPSS 0.5%CVE-2026-24683HIGHFreeRDP has a heap-use-after-free in ainput_send_input_eventEPSS 0.5%CVE-2024-50106CRITICALnfsd: fix race between laundromat and free_stateidEPSS 0.5%CVE-2026-24681HIGHFreeRDP has a heap-use-after-free in urb_bulk_transfer_cbEPSS 0.5%CVE-2021-20227—A flaw was found in SQLite's SELECT query functionality (src/select.c). This flaw allows an attacker who is capable of running SQL queries lEPSS 0.5%CVE-2026-15765HIGHUse after free in Ozone in Google Chrome prior to 150.0.7871.125 allowed a remote attacker who convinced a user to engage in specific UI gesEPSS 0.5%CVE-2024-21803LOWPossible UAF in bt_accept_poll in Linux kernelEPSS 0.5%CVE-2026-15764HIGHUse after free in Ozone in Google Chrome on Linux prior to 150.0.7871.125 allowed a remote attacker who convinced a user to engage in specifEPSS 0.5%CVE-2025-3030HIGHMemory safety bugs fixed in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9EPSS 0.5%