Weaknesses of type CWE-416

5,043 results

Uso após liberação de memória

Ocorre quando o código tenta acessar um bloco de memória que já foi desalocado (free/delete). O ponteiro continua apontando para aquele endereço, mas o dado ali pode ter sido sobrescrito por outra operação, causando comportamento impredizível, corrupção de dados ou execução de código arbitrário.

Example

Um buffer é alocado, depois liberado com free(). Mais adiante, o código ainda tenta ler ou escrever naquele mesmo ponteiro sem verificar. Se um atacante controlar a alocação subsequente daquele endereço, consegue manipular o conteúdo que será lido.

How to mitigate

Anule o ponteiro imediatamente após liberar (ptr = NULL), implemente análise estática para detectar acessos pós-liberação, use ferramentas como valgrind ou AddressSanitizer nos testes, e considere linguagens com gerenciamento automático de memória para código sensível.

CVE-2024-30028HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2024-25198CRITICALInappropriate pointer order of laser_scan_filter_.reset() and tf_listener_.reset() (amcl_node.cpp) in Open Robotics Robotic Operating SytsteEPSS 0.7%CVE-2025-54906HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-7533HIGHUse after free in Sharing in Google Chrome on iOS prior to 127.0.6533.99 allowed a remote attacker to potentially exploit heap corruption viEPSS 0.7%CVE-2026-78450HIGHWindows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-42987HIGHWindows Deployment Services (WDS) Remote Code ExecutionEPSS 0.7%CVE-2026-62819HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2021-47259HIGHNFS: Fix use-after-free in nfs4_init_client()EPSS 0.7%CVE-2026-72936HIGHWindows SMB Client Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-72981HIGHIP Helper Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-40415HIGHWindows TCP/IP Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69858HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-70342HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2026-65789HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-45599HIGHWindows UPnP Device Host Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-26455HIGHfluent-bit 2.2.2 contains a Use-After-Free vulnerability in /fluent-bit/plugins/custom_calyptia/calyptia.c.EPSS 0.7%CVE-2026-78449HIGHWindows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-83997HIGHWindows Message Queuing Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-72987HIGHWindows DNS Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69989HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.7%