Fallos del tipo CWE-416

5043 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2020-4060MEDIUMUse After Free in in cups_update_info in LoRa Basics StationEPSS 0.9%CVE-2022-28641HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.02.34. EPSS 0.9%CVE-2022-2858HIGHUse after free in Sign-In Flow in Google Chrome prior to 104.0.5112.101 allowed a remote attacker to potentially exploit heap corruption viaEPSS 0.9%CVE-2026-45185CRITICALExim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing path. It is triggeredEPSS 0.9%CVE-2021-21417HIGHUse after free in fluidsynthEPSS 0.9%CVE-2026-28387HIGHPotential Use-after-free in DANE Client CodeEPSS 0.9%CVE-2023-3214HIGHUse after free in Autofill payments in Google Chrome prior to 114.0.5735.133 allowed a remote attacker to potentially exploit heap corruptioEPSS 0.9%CVE-2025-21387HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-38160MEDIUMWindows TCP/IP Information Disclosure VulnerabilityEPSS 0.9%CVE-2023-21784HIGH3D Builder Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-1077HIGHUse after free in Network in Google Chrome prior to 121.0.6167.139 allowed a remote attacker to potentially exploit heap corruption via a maEPSS 0.9%CVE-2022-2855HIGHUse after free in ANGLE in Google Chrome prior to 104.0.5112.101 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.9%CVE-2024-43463HIGHMicrosoft Office Visio Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-32033MEDIUMMicrosoft Failover Cluster Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-13368CRITICALWatchGuard Firebox Race Condition and Use-After-Free in Mobile VPN with IKEv2 LDAP AuthenticationEPSS 0.9%CVE-2023-32134HIGHSante DICOM Viewer Pro DCM File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-38139HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2023-2203HIGHA flaw was found in the WebKitGTK package. An improper input validation issue may lead to a use-after-free vulnerability. This flaw allows aEPSS 0.9%CVE-2025-21362HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-27578HIGHPixmeo OsiriX MD Use After FreeEPSS 0.9%