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-2026-14043CRITICALUse after free in GetUserMedia in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process toEPSS 0.3%CVE-2026-17924CRITICALUse after free in DNS in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentiaEPSS 0.3%CVE-2026-17894HIGHUse after free in Views in Google Chrome on Linux prior to 151.0.7922.72 allowed a remote attacker to potentially exploit heap corruption viEPSS 0.3%CVE-2026-17784HIGHUse after free in Audio in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process toEPSS 0.3%CVE-2026-13846CRITICALUse after free in USB in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to pEPSS 0.3%CVE-2026-3923HIGHUse after free in WebMIDI in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.3%CVE-2026-15899CRITICALUse after free in CameraCapture in Google Chrome on Mac prior to 150.0.7871.128 allowed a remote attacker to potentially perform a sandbox eEPSS 0.3%CVE-2026-17692CRITICALUse after free in DataTransfer in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker who had compromised the rendererEPSS 0.3%CVE-2026-5874CRITICALUse after free in PrivateAI in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who convinced a user to engage in specific UI EPSS 0.3%CVE-2026-5655MEDIUMUse After Free in WiresharkEPSS 0.3%CVE-2026-9961HIGHUse after free in SurfaceCapture in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially exploit heap corruption vEPSS 0.3%CVE-2026-3918HIGHUse after free in WebMCP in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.3%CVE-2026-6358HIGHUse after free in XR in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker to perform an out of bounds memory read vEPSS 0.3%CVE-2026-13792CRITICALUse after free in Touchbar in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker to potentially perform a sandbox escape EPSS 0.3%CVE-2026-15901CRITICALUse after free in Network in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to potentially exploit heap corruption via a crEPSS 0.3%CVE-2026-17688CRITICALUse after free in Input in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2026-19175CRITICALUse after free in Payments in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape via a EPSS 0.3%CVE-2026-17804CRITICALUse after free in Media in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2026-14005HIGHUse after free in Omnibox in Google Chrome on Android prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in speEPSS 0.3%CVE-2026-17752HIGHUse after free in Views in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.3%