Weaknesses of type CWE-416

5,042 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-2022-30647HIGHAdobe Illustrator Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 2.5%CVE-2022-24360HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24362HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24367HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24365HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24364HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24359HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24363HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24357HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2022-24366HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. User interaEPSS 2.5%CVE-2021-21900HIGHA code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crEPSS 2.5%CVE-2024-21409HIGH.NET, .NET Framework, and Visual Studio Remote Code Execution VulnerabilityEPSS 2.5%CVE-2021-36008LOWAdobe Illustrator PDF File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 2.5%CVE-2022-43552MEDIUMA use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proEPSS 2.5%CVE-2025-62221HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 2.5%KEVCVE-2025-54101MEDIUMWindows SMB Client Remote Code Execution VulnerabilityEPSS 2.5%CVE-2021-27267HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 10.1.0.37527. User interaEPSS 2.5%CVE-2021-27268HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 10.1.0.37527. User interaEPSS 2.5%CVE-2023-28319HIGHA use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 2EPSS 2.5%CVE-2018-10496—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Internet Browser Fixed in versioEPSS 2.5%