Falhas do tipo CWE-416

5.043 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-2026-84353CRITICALUse after free in Shared Tab Groups in Google Chrome on on Android prior to 152.0.7977.75 allowed a remote attacker leveraging social engineEPSS 0.5%CVE-2026-87455CRITICALUse after free in Aura in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to potentially execute arbitrary code outside the sEPSS 0.5%CVE-2026-87634CRITICALUse after free in WebPackaging in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to potentially execute arbitrary code outsiEPSS 0.5%CVE-2026-79047CRITICALUse after free in Views in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execute arbitraryEPSS 0.5%CVE-2024-5845HIGHUse after free in Audio in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 0.5%CVE-2026-24285HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2026-79290CRITICALUse after free in Aura in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via aEPSS 0.5%CVE-2026-78909CRITICALUse after free in Views in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execute arbitraryEPSS 0.5%CVE-2026-78937CRITICALUse after free in Search in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to poEPSS 0.5%CVE-2026-79200CRITICALUse after free in Aura in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via aEPSS 0.5%CVE-2026-79232CRITICALUse after free in Aura in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially execute arbitrary code outside the sEPSS 0.5%CVE-2026-79078CRITICALUse after free in FedCM in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execute arbitraryEPSS 0.5%CVE-2026-87494CRITICALUse after free in Browser in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to eEPSS 0.5%CVE-2026-87558CRITICALUse after free in Payments in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside theEPSS 0.5%CVE-2026-87581CRITICALUse after free in Payments in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to potentially exEPSS 0.5%CVE-2026-87448CRITICALUse after free in DevTools in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox vEPSS 0.5%CVE-2026-2798HIGHUse-after-free in the DOM: Core & HTML componentEPSS 0.5%CVE-2026-79052CRITICALUse after free in Aura in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via aEPSS 0.5%CVE-2026-84352CRITICALUse after free in WebGL in Google Chrome on on Android prior to 152.0.7977.75 allowed a remote attacker to execute arbitrary code outside thEPSS 0.5%CVE-2026-5278HIGHUse after free in Web MIDI in Google Chrome on Android prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a craEPSS 0.5%