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-2022-28672HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. User interaEPSS 1.9%CVE-2022-28250MEDIUMAdobe Acrobat Reader DC Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 1.9%CVE-2021-46655HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2025-21307CRITICALWindows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityEPSS 1.9%CVE-2025-21224HIGHWindows Line Printer Daemon (LPD) Service Remote Code Execution VulnerabilityEPSS 1.9%CVE-2023-38573HIGHA use-after-free vulnerability exists in the way Foxit Reader 12.1.2.15356 handles a signature field. A specially crafted Javascript code inEPSS 1.9%CVE-2025-30400HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 1.9%KEVCVE-2021-21870HIGHA use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDFEPSS 1.9%CVE-2021-21893HIGHA use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.0.0.49893. A specially crafted PDFEPSS 1.9%CVE-2025-26663HIGHWindows Lightweight Directory Access Protocol (LDAP) Remote Code Execution VulnerabilityEPSS 1.9%CVE-2021-34330—A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Jt981.dll library EPSS 1.9%CVE-2024-38259HIGHMicrosoft Management Console Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-31083HIGHXorg-x11-server: use-after-free in procrenderaddglyphsEPSS 1.9%CVE-2022-24101LOWAdobe Acrobat Reader DC Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 1.9%CVE-2020-13558HIGHA code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit WebKitGTK 2.30.1. A specially crafted web EPSS 1.9%CVE-2023-32174CRITICALUnified Automation UaGateway NodeManagerOpcUa Use-After-Free Remote Code Execution VulnerabilityEPSS 1.9%CVE-2022-24062HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pro 13.2.0.21165. User EPSS 1.8%CVE-2021-28593LOWAdobe Illustrator PostScript Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 1.8%CVE-2025-21406HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-26221HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 1.8%