Weaknesses of type CWE-416

5,103 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-2025-46205HIGHA heap-use-after free in the PdfTokenizer::ReadDictionary function of podofo v0.10.0 to v0.10.5 allows attackers to cause a Denial of ServicEPSS 0.4%CVE-2025-5958HIGHUse after free in Media in Google Chrome prior to 137.0.7151.103 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.4%CVE-2024-30031HIGHWindows CNG Key Isolation Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-3066HIGHUse after free in Site Isolation in Google Chrome prior to 135.0.7049.84 allowed a remote attacker to potentially exploit heap corruption viEPSS 0.4%CVE-2024-9243HIGHFoxit PDF Reader AcroForm Doc Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-44805MEDIUMWindows Network Controller (NC) Host Agent Denial of Service VulnerabilityEPSS 0.4%CVE-2022-50363CRITICALskmsg: pass gfp argument to alloc_sk_msg()EPSS 0.4%CVE-2025-58719MEDIUMWindows Connected Devices Platform Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2022-1934MEDIUMUse After Free in mruby/mrubyEPSS 0.4%CVE-2023-49554MEDIUMUse After Free vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the do_directive function in tEPSS 0.4%CVE-2026-4711CRITICALUse-after-free in the Widget: Cocoa componentEPSS 0.4%CVE-2026-3921HIGHUse after free in TextEncoding in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.4%CVE-2026-20822HIGHWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-12442HIGHUse after free in Passwords in Google Chrome on Android prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code via a crEPSS 0.4%CVE-2025-59290HIGHWindows Bluetooth Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-20865HIGHWindows Management Services Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-56373MEDIUMImageMagick - Use-After-Free Write in PDB DecoderEPSS 0.4%CVE-2022-2742HIGHUse after free in Exosphere in Google Chrome on Chrome OS and Lacros prior to 104.0.5112.79 allowed a remote attacker who convinced a user tEPSS 0.4%CVE-2026-20842HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2023-44095—Use-After-Free (UAF) vulnerability in the surfaceflinger module.Successful exploitation of this vulnerability can cause system crash.EPSS 0.4%