Weaknesses of type CWE-416

5,138 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-2026-84641HIGHInformation disclosure due to malicious IMAP server responseEPSS 0.3%CVE-2024-30386HIGHJunos OS and Junos OS Evolved: In a EVPN-VXLAN scenario state changes on adjacent systems can cause an l2ald process crashEPSS 0.3%CVE-2026-10967HIGHUse after free in SurfaceCapture in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderEPSS 0.3%CVE-2021-47356HIGHmISDN: fix possible use-after-free in HFC_cleanup()EPSS 0.3%CVE-2026-10933HIGHUse after free in Audio in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer procesEPSS 0.3%CVE-2024-38375MEDIUM@fastly/js-compute use-after-free in some host call implementationsEPSS 0.3%CVE-2025-10500HIGHUse after free in Dawn in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 0.3%CVE-2026-19558HIGHUse after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extensEPSS 0.3%CVE-2026-17898HIGHUse after free in DevTools in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extensionEPSS 0.3%CVE-2026-19165HIGHUse after free in Extensions in Google Chrome prior to 151.0.7922.109 allowed an attacker who convinced a user to install a malicious extensEPSS 0.3%CVE-2025-8882HIGHUse after free in Aura in Google Chrome prior to 139.0.7258.127 allowed a remote attacker who convinced a user to engage in specific UI gestEPSS 0.3%CVE-2024-26907HIGHRDMA/mlx5: Fix fortify source warning while accessing Eth segmentEPSS 0.3%CVE-2026-58637HIGHWindows Client-Side Caching Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69500HIGHWindows Image Acquisition Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69401HIGHAudio Video Control Transport Protocol Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69648HIGHWindows Notification Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69834HIGHWindows ALPC Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62726HIGHWindows Telephony Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-26177HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69275HIGHKernel Streaming WOW Thunk Service Driver Elevation of Privilege VulnerabilityEPSS 0.3%