Fallos del tipo CWE-416

5129 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-2025-55688HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-47233MEDIUMThe brcm80211 component in the Linux kernel through 6.5.10 has a brcmf_cfg80211_detach use-after-free in the device unplugging (disconnect tEPSS 0.3%CVE-2025-14860CRITICALUse-after-free in the Disability Access APIs componentEPSS 0.3%CVE-2026-21908HIGHJunos OS and Junos OS Evolved: Use after free vulnerability In 802.1X authentication daemon can cause crash of the dot1xd processEPSS 0.3%CVE-2026-11650HIGHUse after free in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a craEPSS 0.3%CVE-2021-3700—A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbrediEPSS 0.3%CVE-2026-11649HIGHUse after free in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a craEPSS 0.3%CVE-2022-49479HIGHmt76: fix tx status related use-after-free race on station removalEPSS 0.3%CVE-2021-4028—A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a soEPSS 0.3%CVE-2024-8818HIGHPDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2024-9764HIGHTungsten Automation Power PDF PDF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-20644MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOSEPSS 0.3%CVE-2026-12329MEDIUMMemory safety bug fixed in Thunderbird ESR 140.12EPSS 0.3%CVE-2022-49470HIGHBluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_eventEPSS 0.3%CVE-2022-43651HIGHBentley View SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-13807HIGHUse after free in Import in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specificEPSS 0.3%CVE-2026-10952HIGHUse after free in Chrome for iOS in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker to potentially exploit heap corrupEPSS 0.3%CVE-2023-4208HIGHUse-after-free in Linux kernel's net/sched: cls_u32 componentEPSS 0.3%CVE-2022-49063HIGHice: arfs: fix use-after-free when freeing @rx_cpu_rmapEPSS 0.3%CVE-2026-10951HIGHUse after free in Autofill in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specifEPSS 0.3%