Weaknesses of type CWE-416

5,142 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-2026-50305HIGHMicrosoft Brokering File System Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-12452HIGHUse after free in Downloads in Google Chrome on Android prior to 149.0.7827.155 allowed a remote attacker to potentially exploit heap corrupEPSS 0.3%CVE-2026-50457HIGHWindows Runtime Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-54125HIGHWindows Runtime Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-49568MEDIUMIllustrator | Use After Free (CWE-416)EPSS 0.3%CVE-2026-50385HIGHWindows Runtime Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-26181HIGHMicrosoft Brokering File System Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-61349HIGHWindows Work Folder Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-11100CRITICALUse after free in File Input in Google Chrome on Mac prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specEPSS 0.3%CVE-2025-21811HIGHnilfs2: protect access to buffers with no active referencesEPSS 0.3%CVE-2024-48423HIGHAn issue in assimp v.5.4.3 allows a local attacker to execute arbitrary code via the CallbackToLogRedirector function within the Assimp librEPSS 0.3%CVE-2026-84894HIGHIn moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidateEPSS 0.3%CVE-2026-91096HIGHIn proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases beforEPSS 0.3%CVE-2022-49651HIGHsrcu: Tighten cleanup_srcu_struct() GP checksEPSS 0.3%CVE-2022-49622HIGHnetfilter: nf_tables: avoid skb access on nf_stolenEPSS 0.3%CVE-2021-47375MEDIUMblktrace: Fix uaf in blk_trace access after removing by sysfsEPSS 0.3%CVE-2024-23848MEDIUMIn the Linux kernel through 6.7.1, there is a use-after-free in cec_queue_msg_fh, related to drivers/media/cec/core/cec-adap.c and drivers/mEPSS 0.3%CVE-2024-0562HIGHKernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.cEPSS 0.3%CVE-2023-3610HIGHUse-after-free in Linux kernel's netfilter: nf_tables componentEPSS 0.3%CVE-2024-33068HIGHUse After Free in WLAN Host CommunicationEPSS 0.3%