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-2026-19154HIGHUse after free in Skia in Google Chrome on Android prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer procesEPSS 0.3%CVE-2026-8390HIGHUse-after-free in the JavaScript: WebAssembly componentEPSS 0.3%CVE-2025-55686HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-22165HIGHGPU DDK - UAF read of GLES3Context::psDrawParams and GLES3Context::psMode and UAF read/write of RMJob::apsCCBsEPSS 0.3%CVE-2025-55331HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-50174HIGHWindows Device Association Broker Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-55689HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-55685HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-59202HIGHWindows Remote Desktop Services Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-3922HIGHUse after free in MediaStream in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via aEPSS 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-2026-3923HIGHUse 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-2026-14043CRITICALUse 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-2026-3918HIGHUse 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-2026-17804CRITICALUse 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-2026-17670CRITICALUse after free in Views in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2024-25443HIGHAn issue in the HuginBase::ImageVariable<double>::linkWith function of Hugin v2022.0.0 allows attackers to cause a heap-use-after-free via pEPSS 0.3%CVE-2026-14390CRITICALUse after free in ANGLE in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-9886CRITICALUse after free in Base in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape viaEPSS 0.3%CVE-2026-14025HIGHUse after free in Views in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specific EPSS 0.3%