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-2025-53132HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2024-23158HIGHMultiple ZDI Vulnerabilities in Autodesk AutoCAD and certain AutoCAD-based productsEPSS 0.4%CVE-2026-6784HIGHMemory safety bugs fixed in Firefox 150 and Thunderbird 150EPSS 0.4%CVE-2025-59236HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-52886MEDIUMPoppler Use After Free VulnerabilityEPSS 0.4%CVE-2023-51549HIGHFoxit PDF Reader AcroForm Doc Object Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-4390MEDIUMTeamSpeak 3 Server Connection State Management process_resend_queue use after freeEPSS 0.4%CVE-2025-62205HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-68843MEDIUMMicrosoft Office Word Information Disclosure VulnerabilityEPSS 0.4%CVE-2026-93374CRITICALUse after free in Dawn in Google Chrome on on Android prior to 153.0.8010.52 allowed a remote attacker to potentially execute arbitrary codeEPSS 0.4%CVE-2025-62216HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-85049HIGHUse after free in Skia in Google Chrome prior to 152.0.7977.82 allowed a remote attacker to execute arbitrary code inside the sandbox via a EPSS 0.4%CVE-2026-6315HIGHUse after free in Permissions in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker who convinced a user to engage iEPSS 0.4%CVE-2026-5872HIGHUse after free in Blink in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a cEPSS 0.4%CVE-2026-15126HIGHUse after free in Forms in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-5866HIGHUse after free in Media in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a cEPSS 0.4%CVE-2026-16805HIGHUse after free in Blink in Google Chrome prior to 150.0.7871.186 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-17661HIGHUse after free in Loader in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2026-79097HIGHUse after free in V8 in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crEPSS 0.4%CVE-2026-6317HIGHUse after free in Cast in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code via a crafted HTML page.EPSS 0.4%