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-2026-24677HIGHFreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264EPSS 0.5%CVE-2025-49743MEDIUMWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2023-38113LOWFoxit PDF Reader Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 0.5%CVE-2022-3352HIGHUse After Free in vim/vimEPSS 0.5%CVE-2025-3416LOWRust-openssl: rust-openssl use-after-free in `md::fetch` and `cipher::fetch`EPSS 0.5%CVE-2022-44547HIGHThe Display Service module has a UAF vulnerability. Successful exploitation of this vulnerability may affect the display service availabilitEPSS 0.5%CVE-2025-29970HIGHMicrosoft Brokering File System Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2026-8829HIGHHTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entitiesEPSS 0.5%CVE-2025-21945HIGHksmbd: fix use-after-free in smb2_lockEPSS 0.5%CVE-2022-44550HIGHThe graphics display module has a UAF vulnerability when traversing graphic layers. Successful exploitation of this vulnerability may affectEPSS 0.5%CVE-2026-19176HIGHUse after free in Skia in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process to executEPSS 0.5%CVE-2022-3235HIGHUse After Free in vim/vimEPSS 0.5%CVE-2022-30644HIGHAdobe Illustrator Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2025-30385HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2022-1055HIGHUse after Free in tc_new_tfilter allowing for privilege escalation in Linux KernelEPSS 0.5%CVE-2025-1006HIGHUse after free in Network in Google Chrome prior to 133.0.6943.126 allowed a remote attacker to potentially exploit heap corruption via a crEPSS 0.5%CVE-2026-6758HIGHUse-after-free in the JavaScript: WebAssembly componentEPSS 0.5%CVE-2020-27820—A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that isEPSS 0.5%CVE-2022-3863MEDIUMUse after free in Browser History in Google Chrome prior to 100.0.4896.75 allowed a remote attacker to potentially exploit heap corruption vEPSS 0.5%CVE-2026-43686HIGHA use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27,EPSS 0.5%