Weaknesses of type CWE-416

5,143 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-2026-50317HIGHWindows Operating Systems Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2024-53139HIGHsctp: fix possible UAF in sctp_v6_available()EPSS 0.2%CVE-2025-11465HIGHAshlar-Vellum Cobalt CO File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-35418HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2024-56554HIGHbinder: fix freeze UAF in binder_release_work()EPSS 0.2%CVE-2026-26167HIGHWindows Push Notifications Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-27927HIGHWindows Projected File System Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-50440HIGHWindows Audio Service Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-32090HIGHWindows Speech Brokered Api Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-11694HIGHUse after free in ServiceWorker in Google Chrome prior to 149.0.7827.103 allowed a remote attacker who had compromised the renderer process EPSS 0.2%CVE-2026-84122MEDIUMUse-after-free in the Audio/Video componentEPSS 0.2%CVE-2025-22020HIGHmemstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_removeEPSS 0.2%CVE-2026-58526HIGHWindows Storage Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-34337HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-50676HIGHWindows Media Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-50321HIGHWindows USB Driver Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2025-15570MEDIUMckolivas lrzip stream.c lzma_decompress_buf use after freeEPSS 0.2%CVE-2024-56619HIGHnilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()EPSS 0.2%CVE-2024-46973HIGHExploitable kernel use-after-free on psServerMMUContext due to reference count mismanagementEPSS 0.2%CVE-2024-57896HIGHbtrfs: flush delalloc workers queue before stopping cleaner kthread during unmountEPSS 0.2%