Falhas do tipo CWE-416

5.051 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-2026-5877HIGHUse after free in Navigation in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox viEPSS 0.4%CVE-2026-9897HIGHUse after free in DOM in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crEPSS 0.4%CVE-2026-14006HIGHUse after free in Navigation in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code via a crafted HTML EPSS 0.4%CVE-2026-18017HIGHUse after free in Dawn in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crEPSS 0.4%CVE-2026-13899HIGHUse after free in HTML in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code inside a sandbox via a crEPSS 0.4%CVE-2026-13885HIGHUse after free in Skia in Google Chrome on Android prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code inside a sandbEPSS 0.4%CVE-2026-15902HIGHUse after free in Cast in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to execute arbitrary code inside a sandbox via a cEPSS 0.4%CVE-2026-9945HIGHUse after free in Media in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sanEPSS 0.4%CVE-2026-13965HIGHUse after free in Oilpan in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-15116HIGHUse after free in Actor in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-16805HIGHUse after free in Blink in Google Chrome prior to 150.0.7871.186 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-6302HIGHUse after free in Video in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-6299HIGHUse after free in Prerender in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code via a crafted HTML EPSS 0.4%CVE-2026-17658HIGHUse after free in V8 in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafEPSS 0.4%CVE-2026-9883HIGHUse after free in Base in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted HTML page.EPSS 0.4%CVE-2026-13898HIGHUse after free in Cast Receiver in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code inside a sandboxEPSS 0.4%CVE-2026-87542HIGHUse after free in Input in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via aEPSS 0.4%CVE-2026-14067HIGHUse after free in Chrome for iOS in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code via a crEPSS 0.4%CVE-2026-9878HIGHUse after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-87536HIGHUse after free in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crEPSS 0.4%