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-2025-50159HIGHRemote Access Point-to-Point Protocol (PPP) EAP-TLS Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-7968HIGHUse after free in Autofill in Google Chrome prior to 128.0.6613.84 allowed a remote attacker who had convinced the user to engage in specifiEPSS 0.6%CVE-2025-24077HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-10200HIGHUse after free in Serviceworker in Google Chrome on Desktop prior to 140.0.7339.127 allowed a remote attacker to potentially exploit heap coEPSS 0.6%CVE-2025-26679HIGHRPC Endpoint Mapper Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-35854HIGHmlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehashEPSS 0.6%CVE-2026-43631CRITICALllama.cpp b7492–b9060 Use-After-Free RCE via llama-serverEPSS 0.6%CVE-2022-38434HIGHAdobe Photoshop SVG File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-26681MEDIUMWin32k Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2025-43457MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS TaEPSS 0.6%CVE-2026-55128HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2024-10488HIGHUse after free in WebRTC in Google Chrome prior to 130.0.6723.92 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.6%CVE-2024-4764CRITICALMultiple WebRTC threads could have claimed a newly connected audio input leading to use-after-free. This vulnerability affects Firefox < 126EPSS 0.6%CVE-2026-55032HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-68893HIGHRemote Desktop Licensing Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69314HIGHWindows Device Association Broker Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69536HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-69451HIGHWindows Management Instrumentation Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69338HIGHRemote Desktop Gateway Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69761HIGHWindows TCP/IP Elevation of Privilege VulnerabilityEPSS 0.6%