Weaknesses of type CWE-416

5,109 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-2026-16351CRITICALSandbox escape due to use-after-free in the DOM: Navigation componentEPSS 0.4%CVE-2026-16352CRITICALSandbox escape due to use-after-free in the Disability Access APIs componentEPSS 0.4%CVE-2026-5883HIGHUse 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-2026-16356CRITICALSandbox escape due to use-after-free in the Disability Access APIs componentEPSS 0.4%CVE-2023-26606HIGHIn the Linux kernel 6.0.8, there is a use-after-free in ntfs_trim_fs in fs/ntfs3/bitmap.c.EPSS 0.4%CVE-2025-27200HIGHAnimate | Use After Free (CWE-416)EPSS 0.4%CVE-2026-13779HIGHUse after free in Chromoting in Google Chrome on ChromeOS prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code via malEPSS 0.4%CVE-2026-19166CRITICALUse after free in Web Authentication in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escEPSS 0.4%CVE-2025-26601HIGHXorg: xwayland: use-after-free in syncinittrigger()EPSS 0.4%CVE-2026-64715MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2025-26600HIGHXorg: xwayland: use-after-free in playreleasedevents()EPSS 0.4%CVE-2026-7347HIGHUse after free in Chromoting in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code via malicious netwEPSS 0.4%CVE-2025-26594HIGHX.org: xwayland: use-after-free of the root cursorEPSS 0.4%CVE-2024-27934HIGH*const c_void / ExternalPointer unsoundness leading to use-after-freeEPSS 0.4%CVE-2026-43719MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOSEPSS 0.4%CVE-2025-47986HIGHUniversal Print Management Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-28835MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOEPSS 0.4%CVE-2025-27365MEDIUMIBM MQ Operator denial of serviceEPSS 0.4%CVE-2025-0444MEDIUMUse after free in Skia in Google Chrome prior to 133.0.6943.53 allowed a remote attacker to potentially exploit heap corruption via a crafteEPSS 0.4%CVE-2020-5376MEDIUMDell Inspiron 7347 BIOS versions prior to A13 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to sysEPSS 0.4%