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-2018-17623—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interactioEPSS 3.3%CVE-2018-17618—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interactioEPSS 3.3%CVE-2024-38147HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 3.3%CVE-2023-38224HIGHZDI-CAN-21122: Adobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 3.2%CVE-2024-41831HIGHZDI-CAN-24569: Adobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 3.2%CVE-2022-34237MEDIUMAdobe Acrobat Reader DC Font Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 3.2%CVE-2023-1531HIGHUse after free in ANGLE in Google Chrome prior to 111.0.5563.110 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 3.2%CVE-2017-10948—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 8.2.1.6871. User interactioEPSS 3.2%CVE-2023-38225HIGHZDI-CAN-21118: Adobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 3.2%CVE-2024-43582HIGHRemote Desktop Protocol Server Remote Code Execution VulnerabilityEPSS 3.2%CVE-2023-26422HIGHZDI-CAN-20176: Adobe Acrobat Reader DC AcroForm deleteItemAt Use-After-Free Remote Code Execution VulnerabilityEPSS 3.1%CVE-2023-26423HIGHZDI-CAN-20160: Adobe Acrobat Reader DC AcroForm insertItemAt Use-After-Free Remote Code Execution VulnerabilityEPSS 3.1%CVE-2019-6768HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.1.16828. User interactiEPSS 3.1%CVE-2019-5145HIGHAn exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit PDF Reader, version 9.7.0.29435. A specially crafted PDEPSS 3.1%CVE-2021-34835HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 3.1%CVE-2021-34834HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaEPSS 3.1%CVE-2021-42380HIGHA use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in theEPSS 3.1%CVE-2022-28842HIGHAdobe Bridge Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 3.1%CVE-2018-9969—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.1049. User interactioEPSS 3.1%CVE-2018-9968—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.1049. User interactioEPSS 3.1%