Falhas do tipo CWE-416

5.129 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-2026-20877HIGHWindows Management Services Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-16851HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.3%CVE-2026-13853CRITICALUse after free in Journeys in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potEPSS 0.3%CVE-2026-5290CRITICALUse after free in Compositing in Google Chrome prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer process toEPSS 0.3%CVE-2026-6360HIGHUse after free in FileSystem in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to potentially exploit object corruption viaEPSS 0.3%CVE-2026-13854CRITICALUse after free in Ozone in Google Chrome on Linux prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process EPSS 0.3%CVE-2026-5289CRITICALUse after free in Navigation in Google Chrome prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer process to EPSS 0.3%CVE-2026-13880CRITICALUse 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-2026-5288CRITICALUse after free in WebView in Google Chrome on Android prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer proEPSS 0.3%CVE-2026-13878CRITICALUse after free in Bluetooth in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer procesEPSS 0.3%CVE-2026-12298MEDIUMMemory safety bug fixed in Firefox 152EPSS 0.3%CVE-2020-14351—A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permissionEPSS 0.3%CVE-2025-3620HIGHUse after free in USB in Google Chrome prior to 135.0.7049.95 allowed a remote attacker to potentially exploit heap corruption via a craftedEPSS 0.3%CVE-2026-11117HIGHUse after free in Views in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via a craftedEPSS 0.3%CVE-2026-13861CRITICALUse after free in Core in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.3%CVE-2026-14113CRITICALUse after free in Updater in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer procEPSS 0.3%CVE-2026-7908CRITICALUse after free in Fullscreen in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to potentially perform a sandbox escape via aEPSS 0.3%CVE-2026-54127HIGHWindows Hyper-V Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-66495HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2025-66493HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%