Fallos del tipo CWE-416

5043 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-2021-44433—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.9%CVE-2023-1533HIGHUse after free in WebProtect in Google Chrome prior to 111.0.5563.110 allowed a remote attacker to potentially exploit heap corruption via aEPSS 0.9%CVE-2023-28305MEDIUMWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2021-20292—There is a flaw reported in the Linux kernel in versions before 5.9 in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm iEPSS 0.9%CVE-2023-28307MEDIUMWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-28306MEDIUMWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-28308MEDIUMWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2021-37202—A vulnerability has been identified in NX 1980 Series (All versions < V1984), Solid Edge SE2021 (All versions < SE2021MP8). The IFC adapter EPSS 0.9%CVE-2022-42720HIGHVarious refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be usedEPSS 0.9%CVE-2023-2722HIGHUse after free in Autofill UI in Google Chrome on Android prior to 113.0.5672.126 allowed a remote attacker to potentially exploit heap corrEPSS 0.9%CVE-2022-26381HIGHAn attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploitable crash. This vuEPSS 0.8%CVE-2024-21384HIGHMicrosoft Office OneNote Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-55326HIGHWindows Connected Devices Platform Service (Cdpsvc) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-33630HIGHc-ares : Use-after-free / double-free in c-ares query-completion handling, remotely triggerable via ares_getaddrinfo() over TCPEPSS 0.8%CVE-2024-30366HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-0193HIGHKernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalationEPSS 0.8%CVE-2025-21394HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-21386HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-21392HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.8%CVE-2022-3885HIGHUse after free in V8 in Google Chrome prior to 107.0.5304.106 allowed a remote attacker to potentially exploit heap corruption via a craftedEPSS 0.8%