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-2026-14093CRITICALUse after free in Cast in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.3%CVE-2026-9874CRITICALUse after free in Dawn in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-28994MEDIUMA use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadEPSS 0.3%CVE-2024-50124HIGHBluetooth: ISO: Fix UAF on iso_sock_timeoutEPSS 0.3%CVE-2026-32161HIGHWindows Native WiFi Miniport Driver Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-14103MEDIUMUse after free in SSL in Google Chrome on ChromeOS prior to 150.0.7871.47 allowed a remote attacker to obtain potentially sensitive informatEPSS 0.3%CVE-2023-3019MEDIUMQemu: e1000e: heap use-after-free in e1000e_write_packet_to_guest()EPSS 0.3%CVE-2021-38023HIGHUse after free in Extensions in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially exploit heap corruption via a EPSS 0.3%CVE-2024-53237HIGHBluetooth: fix use-after-free in device_for_each_child()EPSS 0.3%CVE-2023-36833MEDIUMJunos OS Evolved: PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202: The aftman-bt process will crash in a MoFRR scenario after multiple link flapsEPSS 0.3%CVE-2023-6111HIGHUse-after-free in Linux kernel's netfilter: nf_tables componentEPSS 0.3%CVE-2022-2961—A use-after-free flaw was found in the Linux kernel’s PLP Rose functionality in the way a user triggers a race condition by calling bind whiEPSS 0.3%CVE-2025-55691HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-4207HIGHUse-after-free in Linux kernel's net/sched: cls_fw componentEPSS 0.3%CVE-2025-55684HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-55688HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-21908HIGHJunos OS and Junos OS Evolved: Use after free vulnerability In 802.1X authentication daemon can cause crash of the dot1xd processEPSS 0.3%CVE-2023-47233MEDIUMThe brcm80211 component in the Linux kernel through 6.5.10 has a brcmf_cfg80211_detach use-after-free in the device unplugging (disconnect tEPSS 0.3%CVE-2025-14860CRITICALUse-after-free in the Disability Access APIs componentEPSS 0.3%CVE-2026-11650HIGHUse after free in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a craEPSS 0.3%