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-2025-50159HIGHRemote Access Point-to-Point Protocol (PPP) EAP-TLS Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-7968HIGHUse after free in Autofill in Google Chrome prior to 128.0.6613.84 allowed a remote attacker who had convinced the user to engage in specifiEPSS 0.6%CVE-2025-24077HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-10200HIGHUse after free in Serviceworker in Google Chrome on Desktop prior to 140.0.7339.127 allowed a remote attacker to potentially exploit heap coEPSS 0.6%CVE-2025-26679HIGHRPC Endpoint Mapper Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-35854HIGHmlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehashEPSS 0.6%CVE-2026-43631CRITICALllama.cpp b7492–b9060 Use-After-Free RCE via llama-serverEPSS 0.6%CVE-2022-38434HIGHAdobe Photoshop SVG File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-26681MEDIUMWin32k Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2025-43457MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS TaEPSS 0.6%CVE-2026-55128HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2024-10488HIGHUse after free in WebRTC in Google Chrome prior to 130.0.6723.92 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.6%CVE-2024-4764CRITICALMultiple WebRTC threads could have claimed a newly connected audio input leading to use-after-free. This vulnerability affects Firefox < 126EPSS 0.6%CVE-2026-55032HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-68893HIGHRemote Desktop Licensing Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69314HIGHWindows Device Association Broker Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69536HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-69451HIGHWindows Management Instrumentation Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69338HIGHRemote Desktop Gateway Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69761HIGHWindows TCP/IP Elevation of Privilege VulnerabilityEPSS 0.6%