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-2018-17621—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interactioEPSS 3.6%CVE-2020-9567HIGHAdobe Bridge versions 10.0.1 and earlier version have an use after free vulnerability. Successful exploitation could lead to arbitrary code EPSS 3.6%CVE-2025-9478HIGHUse after free in ANGLE in Google Chrome prior to 139.0.7258.154 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 3.6%CVE-2019-6757HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.16811. User interactionEPSS 3.6%CVE-2023-35380HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 3.5%CVE-2024-30035HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 3.5%CVE-2024-22252CRITICALUse-after-free vulnerabilityEPSS 3.5%CVE-2021-28553HIGHAdobe Acrobat Reader use-after-free vulnerability could lead to arbitrary code executionEPSS 3.5%CVE-2023-21552HIGHWindows GDI Elevation of Privilege VulnerabilityEPSS 3.5%CVE-2022-28242HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.5%CVE-2022-34225HIGHAdobe Acrobat Reader DC AcroForm exportValues Use-After-Free Remote Code Execution VulnerabilityEPSS 3.5%CVE-2022-28271HIGHAdobe Photoshop PDF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 3.5%CVE-2020-9566HIGHAdobe Bridge versions 10.0.1 and earlier version have an use after free vulnerability. Successful exploitation could lead to arbitrary code EPSS 3.5%CVE-2019-5126HIGHAn exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit PDF Reader, version 9.7.0.29435. A specially crafted PDEPSS 3.5%CVE-2019-6761HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.0.16811. User interactiEPSS 3.5%CVE-2019-6762HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit PhantomPDF 9.4.1.16828. User interEPSS 3.5%CVE-2021-34831HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.4.37651. User interactioEPSS 3.5%CVE-2021-34848HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 3.5%CVE-2022-24103HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.5%CVE-2025-5068HIGHUse after free in Blink in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 3.5%