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-2025-0238MEDIUMUse-after-free when breaking lines in textEPSS 0.8%CVE-2024-30360HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30361HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30352HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30344HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30339HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30358HIGHFoxit PDF Reader AcroForm User-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-62562HIGHMicrosoft Outlook Remote Code Execution VulnerabilityEPSS 0.8%CVE-2022-1284HIGHheap-use-after-free in radareorg/radare2EPSS 0.8%CVE-2024-30346HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30345HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30351HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30336HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-29132MEDIUMIrssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special collector reference. This occurs when printing of EPSS 0.8%CVE-2022-1444HIGHheap-use-after-free in radareorg/radare2EPSS 0.8%CVE-2022-3058HIGHUse after free in Sign-In Flow in Google Chrome prior to 105.0.5195.52 allowed a remote attacker who convinced a user to engage in specific EPSS 0.8%CVE-2025-30427MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 18.4, iOS 18.4 and iPadOS 18.4, iPadOS 1EPSS 0.8%CVE-2025-60723MEDIUMDirectX Graphics Kernel Denial of Service VulnerabilityEPSS 0.8%CVE-2024-1673HIGHUse after free in Accessibility in Google Chrome prior to 122.0.6261.57 allowed a remote attacker who had compromised the renderer process tEPSS 0.8%CVE-2024-30362HIGHFoxit PDF Reader PDF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%