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-2026-6317HIGHUse after free in Cast in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code via a crafted HTML page.EPSS 0.4%CVE-2026-14403HIGHUse after free in V8 in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafEPSS 0.4%CVE-2026-79244HIGHUse after free in Animation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox vEPSS 0.4%CVE-2026-17694HIGHUse after free in DOM in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a craEPSS 0.4%CVE-2026-6316HIGHUse after free in Forms 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-2026-5861HIGHUse after free in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafEPSS 0.4%CVE-2026-6303HIGHUse after free in Codecs in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via aEPSS 0.4%CVE-2026-15118HIGHUse after free in Input 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-2026-9947HIGHUse after free in XML 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-2026-16805HIGHUse 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-2026-4680HIGHUse after free in FedCM in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 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-2026-79198HIGHUse after free in Platform in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox viEPSS 0.4%CVE-2026-87587HIGHUse 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%CVE-2026-87617HIGHUse after free in DevTools in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to execute arbitrEPSS 0.4%CVE-2026-79202HIGHUse after free in Chromecast in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox EPSS 0.4%CVE-2026-79197HIGHUse after free in V8 in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crEPSS 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-2026-17836HIGHUse 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-2026-5877HIGHUse 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%