Weaknesses of type CWE-416

6,177 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-2022-27786HIGHAdobe Acrobat Reader DC Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 12.1%CVE-2021-28663HIGHThe Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading tEPSS 12.1%KEVCVE-2019-13510—Rockwell Automation Arena Simulation Software versions 16.00.00 and earlier contain a USE AFTER FREE CWE-416. A maliciously crafted Arena fiEPSS 12.0%CVE-2022-28238HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 11.9%CVE-2022-27790HIGHAdobe Acrobat Reader DC Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 11.9%CVE-2021-37973CRITICALUse after free in Portals in Google Chrome prior to 94.0.4606.61 allowed a remote attacker who had compromised the renderer process to potenEPSS 11.7%KEVCVE-2021-44710HIGHAdobe Acrobat Reader Use-after-free could lead to Arbitrary code executionEPSS 11.4%CVE-2021-45064HIGHAdobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 11.3%CVE-2022-24104HIGHAdobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 11.1%CVE-2020-8881HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.916. User interacEPSS 11.1%CVE-2025-26670HIGHLightweight Directory Access Protocol (LDAP) Client Remote Code Execution VulnerabilityEPSS 11.1%CVE-2021-30762HIGHA use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.5.4. Processing maliciously crafted web EPSS 11.0%KEVCVE-2022-28269LOWAdobe Acrobat Reader DC Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 10.7%CVE-2020-6572HIGHUse after free in Media in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to execute arbitrary code via a crafted HTML page.EPSS 10.6%KEVCVE-2021-44704HIGHAdobe Acrobat Reader Use-After-Free could lead to Arbitrary code executionEPSS 10.6%CVE-2024-49116HIGHWindows Remote Desktop Services Remote Code Execution VulnerabilityEPSS 10.3%CVE-2022-2586MEDIUMIt was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that EPSS 10.2%KEVCVE-2020-17410HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 10.0.0.35798. User interaEPSS 10.1%CVE-2020-17417HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.0.1.35811. User interactioEPSS 10.1%CVE-2017-0263HIGHThe kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, WindowEPSS 10.0%KEV