Weaknesses of type CWE-416

5,111 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-2026-14425CRITICALUse after free in ANGLE in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-14424CRITICALUse after free in Dawn in Google Chrome on Mac prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via EPSS 0.3%CVE-2026-14398CRITICALUse after free in ANGLE in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-13915HIGHUse after free in Chrome for iOS in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in EPSS 0.3%CVE-2026-19171CRITICALUse after free in Media in Google Chrome on Windows prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escapEPSS 0.3%CVE-2026-13789CRITICALUse after free in GPU in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentiaEPSS 0.3%CVE-2026-42007CRITICALAn attacker that has valid credentials can use a Sieve script with the editheader extension to trigger a use-after-free in the mail editing EPSS 0.3%CVE-2026-17884HIGHObject lifecycle issue in WebRTC in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially exploit heap corruption viEPSS 0.3%CVE-2026-17670CRITICALUse after free in Views in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2026-14394HIGHUse after free in V8 in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially exploit heap corruption via a crafted EPSS 0.3%CVE-2023-48184LOWQuickJS before 7414e5f has a quickjs.h JS_FreeValueRT use-after-free because of incorrect garbage collection of async functions with closureEPSS 0.3%CVE-2026-3923HIGHUse after free in WebMIDI in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.3%CVE-2026-19149CRITICALUse after free in Aura in Google Chrome on Linux prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape vEPSS 0.3%CVE-2026-15904HIGHUse after free in Ozone in Google Chrome on Linux prior to 150.0.7871.128 allowed a remote attacker who convinced a user to engage in specifEPSS 0.3%CVE-2026-13869CRITICALUse after free in Device in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2024-25443HIGHAn issue in the HuginBase::ImageVariable<double>::linkWith function of Hugin v2022.0.0 allows attackers to cause a heap-use-after-free via pEPSS 0.3%CVE-2026-6919CRITICALUse after free in DevTools in Google Chrome prior to 147.0.7727.117 allowed a remote attacker who had compromised the renderer process to poEPSS 0.3%CVE-2026-17784HIGHUse after free in Audio in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process toEPSS 0.3%CVE-2026-16424CRITICALUse after free in GPU in Google Chrome on Android prior to 150.0.7871.182 allowed a remote attacker who had compromised the renderer processEPSS 0.3%CVE-2022-49111HIGHBluetooth: Fix use after free in hci_send_aclEPSS 0.3%