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-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%