Weaknesses of type CWE-416

5,110 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-2023-26392HIGHZDI-CAN-20235: Adobe Substance 3D Stager USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-30416HIGHUse After Free (UAF) vulnerability in the underlying driver module. Impact: Successful exploitation of this vulnerability will affect availaEPSS 0.4%CVE-2023-26410HIGHZDI-CAN-20309: Adobe Substance 3D Designer USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-26384HIGHZDI-CAN-20279: Adobe Substance 3D Stager USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-52115HIGHThe iaware module has a Use-After-Free (UAF) vulnerability. Successful exploitation of this vulnerability may affect the system functions.EPSS 0.4%CVE-2020-5348MEDIUMDell Latitude 7202 Rugged Tablet BIOS versions prior to A28 contain a UAF vulnerability in EFI_BOOT_SERVICES in system management mode. A loEPSS 0.4%CVE-2026-43726MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2025-48806HIGHMicrosoft MPEG-2 Video Extension Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-2312MEDIUMGRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks afterEPSS 0.4%CVE-2026-43742MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2025-49660HIGHWindows Event Tracing Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-21219HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-43734MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2025-59206HIGHWindows Resilient File System (ReFS) Deduplication Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-43720MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2026-43699MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2025-49675HIGHKernel Streaming WOW Thunk Service Driver Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-93834HIGHQemu-kvm: 9pfs: use-after-free race in tlcreate/twalk allows vm guest escapeEPSS 0.4%CVE-2026-58613HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-91749CRITICALUse after free in Workers in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to potentially execute arbitrary code outside thEPSS 0.4%