Falhas do tipo CWE-416

5.110 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar (ler ou escrever) um bloco de memória que já foi liberado (free, delete). O programa mantém um ponteiro para a memória, mas o sistema operacional pode reatribuir essa região para outro uso, causando corrupção de dados, travamento ou execução de código arbitrário.

Exemplo

Um servidor web aloca memória para armazenar dados de sessão do usuário, depois libera essa memória quando a sessão encerra. Se uma thread continuar tentando acessar essa sessão após a liberação, pode ler dados de outra sessão ou sobrescrever dados críticos de outro processo.

Como mitigar

Sempre anule ponteiros após liberar memória (ptr = NULL), use variáveis de controle para rastrear estado de alocação, implemente gerenciamento automático de memória quando possível (smart pointers em C++), e execute testes com sanitizers (AddressSanitizer, Valgrind) durante desenvolvimento e CI/CD.

CVE-2026-40361HIGHMicrosoft Outlook and Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2022-44518HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.4%CVE-2026-49798CRITICALWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2022-44520HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.4%CVE-2026-40402CRITICALWindows Hyper-V Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-45474HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40358HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-32190HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40366HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-53718HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-30978HIGHHeap-use-after-free in CIccCmm::AddXform()EPSS 0.4%CVE-2026-17896HIGHUse after free in DevTools in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via EPSS 0.4%CVE-2026-13802HIGHUse after free in Views in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specific UI gestEPSS 0.4%CVE-2026-14426HIGHUse after free in V8 in Google Chrome prior to 150.0.7871.46 allowed a remote attacker who convinced a user to engage in specific UI gestureEPSS 0.4%CVE-2026-6319HIGHUse after free in Payments in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker who convinced a user to engage in sEPSS 0.4%CVE-2026-14064HIGHUse after free in PageInfo in Google Chrome on Android prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in spEPSS 0.4%CVE-2026-9901HIGHUse after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to execuEPSS 0.4%CVE-2026-9956HIGHUse after free in iOS in Google Chrome on iOS prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UEPSS 0.4%CVE-2026-9934HIGHUse after free in Aura in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestEPSS 0.4%CVE-2026-9922HIGHUse after free in GPU in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to EPSS 0.4%