Falhas do tipo CWE-416

5.126 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-2026-40467MEDIUMUse after free in gawkEPSS 0.3%CVE-2026-40701MEDIUMNGINX ngx_http_ssl_module vulnerabilityEPSS 0.3%CVE-2023-50196HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2025-54092HIGHWindows Hyper-V Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-0908HIGHUse after free in ANGLE in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 0.3%CVE-2022-49111HIGHBluetooth: Fix use after free in hci_send_aclEPSS 0.3%CVE-2021-21088HIGHAdobe Acrobat Pro DC Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2025-54257HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.3%CVE-2025-0762HIGHUse after free in DevTools in Google Chrome prior to 132.0.6834.159 allowed a remote attacker to potentially exploit heap corruption via a cEPSS 0.3%CVE-2024-3170HIGHUse after free in WebRTC in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.3%CVE-2024-3169HIGHUse after free in V8 in Google Chrome prior to 121.0.6167.139 allowed a remote attacker to potentially exploit heap corruption via a craftedEPSS 0.3%CVE-2026-9891CRITICALUse after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to EPSS 0.3%CVE-2024-3168HIGHUse after free in DevTools in Google Chrome prior to 122.0.6261.57 allowed a remote attacker to potentially exploit heap corruption via a crEPSS 0.3%CVE-2023-38211HIGHZDI-CAN-21078: Adobe Dimension GLB File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2022-46311HIGHThe contacts component has a free (undefined) provider vulnerability. Successful exploitation of this vulnerability may affect data integritEPSS 0.3%CVE-2025-55157MEDIUMVim heap use-after-free vulnerability when processing recursive tuple data typesEPSS 0.3%CVE-2026-10901HIGHUse after free in Passwords in Google Chrome on Mac prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in speciEPSS 0.3%CVE-2026-43746MEDIUMA 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 0.3%CVE-2026-69576HIGHGraphic Fonts Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-92023HIGHUse-after-free in the XML componentEPSS 0.3%