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-2026-57585HIGHMessagePack: Out-of-bounds read/crash on Unpacker reuse after caught errorEPSS 0.5%CVE-2026-24676HIGHFreeRDP has a heap-use-after-free in audio_format_compatibleEPSS 0.5%CVE-2026-24683HIGHFreeRDP has a heap-use-after-free in ainput_send_input_eventEPSS 0.5%CVE-2026-24681HIGHFreeRDP has a heap-use-after-free in urb_bulk_transfer_cbEPSS 0.5%CVE-2026-24491HIGHFreeRDP has a heap-use-after-free in video_timerEPSS 0.5%CVE-2026-24675HIGHFreeRDP has a Heap-use-after-free in urb_select_interfaceEPSS 0.5%CVE-2026-9111HIGHUse after free in WebRTC in Google Chrome on Linux prior to 148.0.7778.179 allowed a remote attacker to execute arbitrary code via a craftedEPSS 0.5%CVE-2026-9995HIGHUse after free in WebXR in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2026-9120HIGHUse after free in WebRTC in Google Chrome prior to 148.0.7778.179 allowed a remote attacker to execute arbitrary code via a crafted HTML pagEPSS 0.5%CVE-2026-7342HIGHUse after free in WebView in Google Chrome on Android prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code inside a sEPSS 0.5%CVE-2026-9962HIGHUse after free in WebRTC in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via aEPSS 0.5%CVE-2026-7336HIGHUse after free in WebRTC in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code inside a sandbox via aEPSS 0.5%CVE-2026-7341HIGHUse after free in WebRTC in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code inside a sandbox via aEPSS 0.5%CVE-2025-48945HIGHpycares has a Use-After-Free VulnerabilityEPSS 0.5%CVE-2022-4382MEDIUMA use-after-free flaw caused by a race among the superblock operations in the gadgetfs Linux driver was found. It could be triggered by yankEPSS 0.5%CVE-2026-20859HIGHWindows Kernel-Mode Driver Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2024-5842HIGHUse after free in Browser UI in Google Chrome prior to 126.0.6478.54 allowed a remote attacker who convinced a user to engage in specific UIEPSS 0.5%CVE-2026-4696CRITICALUse-after-free in the Layout: Text and Fonts componentEPSS 0.5%CVE-2026-4691CRITICALUse-after-free in the CSS Parsing and Computation componentEPSS 0.5%CVE-2024-5832HIGHUse after free in Dawn in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to potentially exploit heap corruption via a crafteEPSS 0.5%