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-2024-43465HIGHMicrosoft Excel Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-5947HIGHSIG(0) validation during query flood may lead to undefined behaviorEPSS 0.8%CVE-2023-32135LOWSante DICOM Viewer Pro DCM File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.8%CVE-2026-21253HIGHMailslot File System Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2022-3887HIGHUse after free in Web Workers in Google Chrome prior to 107.0.5304.106 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.8%CVE-2026-17118CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2021-38467HIGHAUVESY VersiondogEPSS 0.8%CVE-2024-30354HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30343HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30337HIGHFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30338HIGHFoxit PDF Reader Doc Object Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-30342HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-2930HIGHUse after free in Extensions in Google Chrome prior to 114.0.5735.90 allowed an attacker who convinced a user to install a malicious extensiEPSS 0.8%CVE-2026-54995HIGHWindows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-50439HIGHMicrosoft Message Queuing Queue Manager Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-50487HIGHWindows DNS Client Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-50694HIGHWindows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-25955MEDIUMFreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)EPSS 0.8%CVE-2022-32922HIGHA use after free issue was addressed with improved memory management. This issue is fixed in Safari 16.1, iOS 16.1 and iPadOS 16, macOS VentEPSS 0.8%CVE-2024-3515LOWUse after free in Dawn in Google Chrome prior to 123.0.6312.122 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 0.8%