Weaknesses of type CWE-416

5,149 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-2021-37652HIGHUse after free in boosted trees creation in TensorFlowEPSS 0.2%CVE-2026-10001HIGHUse after free in PerformanceManager in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer proEPSS 0.2%CVE-2025-52885MEDIUMGHSL-2025-042: Poppler has Use-After-FreeEPSS 0.2%CVE-2025-0427HIGHMali GPU Kernel Driver allows access to already freed memoryEPSS 0.2%CVE-2023-28980MEDIUMJunos OS and Junos OS Evolved: In a BGP rib sharding scenario an rpd crash will happen shortly after a specific CLI command is issuedEPSS 0.2%CVE-2023-46708MEDIUMWlan has a use after free vulnerabilityEPSS 0.2%CVE-2023-20933HIGHIn several functions of MediaCodec.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalatiEPSS 0.2%CVE-2026-65407MEDIUMA use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, iOS 26.7 and iPadOS 2EPSS 0.2%CVE-2025-9449HIGHUse After Free vulnerability affecting the PAR file reading procedure in SOLIDWORKS eDrawings on Release SOLIDWORKS Desktop 2025EPSS 0.2%CVE-2026-30007MEDIUMXnSoft NConvert 7.230 is vulnerable to Use-After-Free via a crafted .tiff fileEPSS 0.2%CVE-2026-57242HIGHFoxit PDF Editor/Reader Page Use-After-Free VulnerabilityEPSS 0.2%CVE-2026-84124MEDIUMUse-after-free in the DOM: Core & HTML componentEPSS 0.2%CVE-2026-13128HIGHFoxit PDF Editor/Reader Doc Object Use-After-Free Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-57252HIGHFoxit PDF Editor/Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-57238HIGHFoxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-13129HIGHFoxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-57244HIGHFoxit PDF Editor/Reader Form Control Use-After-Free VulnerabilityEPSS 0.2%CVE-2025-0304HIGHLiteos_a has an use after free vulnerabilityEPSS 0.2%CVE-2026-5943HIGHFoxit PDF Editor/Reader AcroForm Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-57249HIGHFoxit PDF Editor/Reader Annotation Use-After-Free VulnerabilityEPSS 0.2%