Falhas do tipo CWE-416

5.043 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar (ler ou escrever) um bloco de memória que já foi liberado (free, delete). O programa mantém um ponteiro para a memória, mas o sistema operacional pode reatribuir essa região para outro uso, causando corrupção de dados, travamento ou execução de código arbitrário.

Exemplo

Um servidor web aloca memória para armazenar dados de sessão do usuário, depois libera essa memória quando a sessão encerra. Se uma thread continuar tentando acessar essa sessão após a liberação, pode ler dados de outra sessão ou sobrescrever dados críticos de outro processo.

Como mitigar

Sempre anule ponteiros após liberar memória (ptr = NULL), use variáveis de controle para rastrear estado de alocação, implemente gerenciamento automático de memória quando possível (smart pointers em C++), e execute testes com sanitizers (AddressSanitizer, Valgrind) durante desenvolvimento e CI/CD.

CVE-2025-31498HIGHc-ares has a use-after-free in read_answers()EPSS 0.6%CVE-2025-54904HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-6754HIGHUse-after-free in the JavaScript Engine componentEPSS 0.6%CVE-2025-54903HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-6746HIGHUse-after-free in the DOM: Core & HTML componentEPSS 0.6%CVE-2026-6747HIGHUse-after-free in the WebRTC componentEPSS 0.6%CVE-2023-0932HIGHUse after free in WebRTC in Google Chrome on Windows prior to 110.0.5481.177 allowed a remote attacker who convinced the user to engage in sEPSS 0.6%CVE-2025-54902HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-54896HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.6%CVE-2023-0927HIGHUse after free in Web Payments API in Google Chrome on Android prior to 110.0.5481.177 allowed a remote attacker who had compromised the renEPSS 0.6%CVE-2026-48090MEDIUMEnvoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)EPSS 0.6%CVE-2026-90793MEDIUMGPAC MP4Box base_scenegraph.c gf_node_get_name use after freeEPSS 0.6%CVE-2026-87464CRITICALUse after free in WebGL in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via EPSS 0.6%CVE-2025-43536MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS EPSS 0.6%CVE-2026-58185HIGHApache Traffic Server: Use-after-free in the intercept pluginEPSS 0.6%CVE-2025-25568CRITICALSoftEtherVPN 5.02.5187 is vulnerable to Use after Free in the Command.c file via the CheckNetworkAcceptThread function. NOTE: the Supplier dEPSS 0.6%CVE-2026-69876HIGHWindows DHCP Server Remote Code Execution VulnerabilityEPSS 0.6%CVE-2024-25199HIGHInappropriate pointer order of map_sub_ and map_free(map_) (amcl_node.cpp) in Open Robotics Robotic Operating Sytstem 2 (ROS2) and Nav2 humbEPSS 0.6%CVE-2026-18692HIGHUse-After-Free in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Remote Code ExecutionEPSS 0.6%CVE-2020-14363HIGHAn integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an appEPSS 0.6%