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-2026-80093HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-11460HIGHUse after free in Storage in Google Chrome prior to 141.0.7390.65 allowed a remote attacker to execute arbitrary code via a crafted video fiEPSS 0.3%CVE-2024-9722HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2024-9725HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-22856MEDIUMFreeRDP has a heap-use-after-free in create_irp_threadEPSS 0.3%CVE-2024-9724HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2024-53171HIGHubifs: authentication: Fix use-after-free in ubifs_tnc_end_commitEPSS 0.3%CVE-2026-6359HIGHUse after free in Video in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2024-9727HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2024-9728HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-19316HIGHFireware OS Pre-Authentication Double Free in iked Allows Denial of Service (DoS)EPSS 0.3%CVE-2023-0469MEDIUMA use-after-free flaw was found in io_uring/filetable.c in io_install_fixed_file in the io_uring subcomponent in the Linux Kernel during calEPSS 0.3%CVE-2025-8576HIGHUse after free in Extensions in Google Chrome prior to 139.0.7258.66 allowed a remote attacker to potentially exploit heap corruption via a EPSS 0.3%CVE-2023-31518MEDIUMA heap use-after-free in the component CDataFileReader::GetItem of teeworlds v0.7.5 allows attackers to cause a Denial of Service (DoS) via EPSS 0.3%CVE-2026-13799HIGHUse after free in QUIC in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via maliciouEPSS 0.3%CVE-2026-56376MEDIUMImageMagick - Heap Use-After-Free in Meta CoderEPSS 0.3%CVE-2026-28688MEDIUMImageMagick has a heap use-after-free in the MSL encoderEPSS 0.3%CVE-2025-53150HIGHWindows Digital Media Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-53768HIGHXbox IStorageService Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-59215HIGHWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.3%