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-2026-19662MEDIUMqpcache NOQNAME proof use-after-free crashes recursive resolverEPSS 0.5%CVE-2023-0135HIGHUse after free in Cart in Google Chrome prior to 109.0.5414.74 allowed an attacker who convinced a user to install a malicious extension to EPSS 0.5%CVE-2025-1012CRITICALUse-after-free during concurrent delazificationEPSS 0.5%CVE-2023-0134HIGHUse after free in Cart in Google Chrome prior to 109.0.5414.74 allowed an attacker who convinced a user to install a malicious extension to EPSS 0.5%CVE-2025-43577HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.5%CVE-2025-43550HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.5%CVE-2021-3392—A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an errEPSS 0.4%CVE-2026-92040HIGHUse-after-free in the JavaScript: WebAssembly componentEPSS 0.4%CVE-2026-6928CRITICALMultiple Vulnerabilities in IBM Concert SoftwareEPSS 0.4%CVE-2025-53147HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-24680HIGHFreeRDP has a heap-use-after-free in update_pointer_new(SDL)EPSS 0.4%CVE-2023-21532HIGHWindows GDI Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2024-0806HIGHUse after free in Passwords in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to potentially exploit heap corruption via speEPSS 0.4%CVE-2026-10646HIGHUse-after-return in `zsock_getaddrinfo()` when a timed-out DNS query is retried without cancellationEPSS 0.4%CVE-2025-53152HIGHDesktop Windows Manager Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-6192HIGHUse after free in Metrics in Google Chrome prior to 137.0.7151.119 allowed a remote attacker to potentially exploit heap corruption via a crEPSS 0.4%CVE-2023-40491HIGHMaxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-54102HIGHWindows Connected Devices Platform Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2024-9252LOWFoxit PDF Reader AcroForm Use-After-Free Information Disclosure VulnerabilityEPSS 0.4%CVE-2023-40488HIGHMaxon Cinema 4D SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%