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-2024-49097HIGHWindows PrintWorkflowUserSvc Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-53734HIGHMicrosoft Office Visio Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-52946HIGHJunos OS and Junos OS Evolved: With traceoptions enabled, receipt of malformed AS PATH causes RPD crashEPSS 0.4%CVE-2023-1393HIGHA flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys thEPSS 0.4%CVE-2026-21675CRITICALiccDEV has a Use After Free vulnerability in CIccCmm class via improper hint manager object deletionEPSS 0.4%CVE-2025-30393HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-39388HIGHZDI-CAN-24055: Adobe Substance 3D Stager SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-26495HIGHAn issue was discovered in Open Design Alliance Drawings SDK before 2024.1. A crafted DWG file can force the SDK to reuse an object that hasEPSS 0.4%CVE-2020-25656—A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. EPSS 0.4%CVE-2026-38998MEDIUMA use-after-free in the SocketDescriptor::tcpReadHandler1 function (liveMedia/RTPInterface.cpp) of LIVE555 Streaming Media (version 2026.02.EPSS 0.4%CVE-2024-11545HIGHIrfanView DXF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-3111HIGHA use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel. This possible flaw caEPSS 0.4%CVE-2022-3449HIGHUse after free in Safe Browsing in Google Chrome prior to 106.0.5249.119 allowed an attacker who convinced a user to install a malicious extEPSS 0.4%CVE-2024-11521HIGHIrfanView DJVU File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-5341MEDIUMImagemagick: heap use-after-free in coders/bmp.cEPSS 0.4%CVE-2025-53151HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2021-39859MEDIUMUse After Free Adobe Acrobat Pro DC [HB-21-0339]EPSS 0.4%CVE-2025-50153HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-69364HIGHWindows Print Spooler Components Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-49761HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.4%