Weaknesses of type CWE-416

5,138 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-2026-69891HIGHWindows Media Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69280HIGHWindows Push Notifications Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-73003HIGHWindows Modern Device Management (MDM) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69281HIGHWindows License Manager Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-65788HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-21763HIGHneighbour: use RCU protection in __neigh_notify()EPSS 0.3%CVE-2026-11648HIGHUse after free in FullScreen in Google Chrome on Windows prior to 149.0.7827.103 allowed a remote attacker to potentially exploit heap corruEPSS 0.3%CVE-2026-15110HIGHUse after free in Extensions in Google Chrome prior to 150.0.7871.115 allowed an attacker who convinced a user to install a malicious extensEPSS 0.3%CVE-2025-55687HIGHWindows Resilient File System (ReFS) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2024-23300HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in GarageBand 10.4.11. Processing a maliciously crEPSS 0.3%CVE-2025-55335HIGHWindows NTFS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2024-57951HIGHhrtimers: Handle CPU state correctly on hotplugEPSS 0.3%CVE-2026-10888HIGHUse after free in Cast Streaming in Google Chrome prior to 149.0.7827.53 allowed an attacker on the local network segment to execute arbitraEPSS 0.3%CVE-2024-42331LOWUse after free in browser_push_errorEPSS 0.3%CVE-2026-14040HIGHUse after free in BrowserTag in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extensiEPSS 0.3%CVE-2025-21761HIGHopenvswitch: use RCU protection in ovs_vport_cmd_fill_info()EPSS 0.3%CVE-2023-40490HIGHMaxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-11646HIGHUse after free in ViewTransitions in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandEPSS 0.3%CVE-2025-21753HIGHbtrfs: fix use-after-free when attempting to join an aborted transactionEPSS 0.3%CVE-2023-53003HIGHEDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_infoEPSS 0.3%