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-2024-5847HIGHUse after free in PDFium in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.5%CVE-2025-26640HIGHWindows Digital Media Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2025-49682HIGHWindows Media Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2024-5694HIGHAn attacker could have caused a use-after-free in the JavaScript engine to read memory in the JavaScript string section of the heap. This vuEPSS 0.5%CVE-2026-84324CRITICALUse after free in Proxy in Google Chrome prior to 152.0.7977.75 allowed a remote attacker to execute arbitrary code outside the sandbox via EPSS 0.5%CVE-2026-60002HIGHssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only EPSS 0.5%CVE-2026-0884CRITICALUse-after-free in the JavaScript Engine componentEPSS 0.5%CVE-2024-8638HIGHType Confusion in V8 in Google Chrome prior to 128.0.6613.137 allowed a remote attacker to potentially exploit object corruption via a craftEPSS 0.5%CVE-2026-2795HIGHUse-after-free in the JavaScript: GC componentEPSS 0.5%CVE-2024-7510HIGHTrimble SketchUp SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-2799HIGHUse-after-free in the DOM: Core & HTML componentEPSS 0.5%CVE-2026-7322HIGHMemory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1EPSS 0.5%CVE-2026-2797HIGHUse-after-free in the JavaScript: GC componentEPSS 0.5%CVE-2024-9960HIGHUse after free in Dawn in Google Chrome prior to 130.0.6723.58 allowed a remote attacker to potentially exploit heap corruption via a crafteEPSS 0.5%CVE-2023-5345HIGHUse-after-free in Linux kernel's fs/smb/client componentEPSS 0.5%CVE-2024-30375HIGHLuxion KeyShot Viewer KSP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-10882HIGHUse after free in Network in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via a crafted HTML pagEPSS 0.5%CVE-2023-21096CRITICALIn OnWakelockReleased of attribution_processor.cc, there is a use after free that could lead to remote code execution with no additional exeEPSS 0.5%CVE-2026-18706HIGHUse-After-Free in MongoDB $graphLookup Aggregation Stage Leads to Denial of Service and Potential Remote Code ExecutionEPSS 0.5%CVE-2026-70311HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.5%