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-2024-50286CRITICALksmbd: fix slab-use-after-free in ksmbd_smb2_session_createEPSS 0.7%CVE-2023-6705HIGHUse after free in WebRTC in Google Chrome prior to 120.0.6099.109 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.7%CVE-2026-24266MEDIUMNVIDIA Triton Inference Server for Linux contains a vulnerability where an attacker can cause a use-after-free issue. A successful exploit oEPSS 0.7%CVE-2026-8746MEDIUMOpen5GS NRF nghttp2-server.c discover_handler use after freeEPSS 0.7%CVE-2026-57089HIGHWindows SMB Server Network Transport Driver (srvnet.sys) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-58164HIGHApache Traffic Server: Remap configuration lifetime and TOCTOU errors cause use-after-freeEPSS 0.7%CVE-2026-62813HIGHWindows Active Directory Domain Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-72954HIGHWindows Deployment Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69539HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-72943HIGHWindows Deployment Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-62787HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69599HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-70341HIGHMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-72928HIGHWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.7%CVE-2022-4921HIGHUse after free in Accessibility in Google Chrome prior to 99.0.4844.51 allowed a remote attacker who convinced a user to engage in specific EPSS 0.7%CVE-2023-35943MEDIUMEnvoy vulnerable to CORS filter segfault when origin header is removed EPSS 0.7%CVE-2026-43822CRITICALA use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPEPSS 0.7%CVE-2026-43778CRITICALA use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPEPSS 0.7%CVE-2026-43799CRITICALA use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPEPSS 0.7%CVE-2026-64700CRITICALA use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPEPSS 0.7%