Falhas do tipo CWE-416

5.074 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-2026-14432HIGHUse 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-2026-79197HIGHUse 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-2026-15107HIGHUse after free in IndexedDB in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox viEPSS 0.4%CVE-2026-6318HIGHUse 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-2026-19560HIGHUse after free in Blink in Google Chrome prior to 151.0.7922.137 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-19559HIGHUse after free in HTML in Google Chrome prior to 151.0.7922.137 allowed a remote attacker to execute arbitrary code inside a sandbox via a cEPSS 0.4%CVE-2026-85049HIGHUse after free in Skia in Google Chrome prior to 152.0.7977.82 allowed a remote attacker to execute arbitrary code inside the sandbox via a EPSS 0.4%CVE-2024-8821LOWPDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.4%CVE-2022-42414LOWThis vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. User interactiEPSS 0.4%CVE-2025-8292HIGHUse after free in Media Stream in Google Chrome prior to 138.0.7204.183 allowed a remote attacker to potentially exploit heap corruption viaEPSS 0.4%CVE-2026-23657HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-7010HIGHUse after free in WebRTC in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.4%CVE-2026-0885MEDIUMUse-after-free in the JavaScript: GC componentEPSS 0.4%CVE-2025-47976HIGHWindows Simple Search and Discovery Protocol (SSDP) Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-1144MEDIUMquickjs-ng quickjs Atomics Ops quickjs.c use after freeEPSS 0.4%CVE-2026-43731HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2026-43715HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, iOEPSS 0.4%CVE-2023-6270HIGHKernel: aoe: improper reference count leads to use-after-free vulnerabilityEPSS 0.4%CVE-2025-54103HIGHWindows Management Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2021-43753HIGHAdobe Lightroom TIF File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.4%