Weaknesses of type CWE-416

5,149 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-2026-52757MEDIUMGhidra < 12.1 - Heap-use-after-free in HighVariable::merge() during decompilationEPSS 0.2%CVE-2026-28933MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOEPSS 0.2%CVE-2024-1395MEDIUMMali GPU Kernel Driver allows improper GPU memory processing operationsEPSS 0.2%CVE-2026-50061HIGHA vulnerability has been identified in Solid Edge SE2025 (All versions < V225.0 Update 15), Solid Edge SE2026 (All versions < V226.0 Update EPSS 0.2%CVE-2026-19548MEDIUMBinutils: binutils: multiple use-after-free in add_archive_element via lto plugin processingEPSS 0.2%CVE-2026-76921MEDIUMUse After Free in WiresharkEPSS 0.2%CVE-2026-50060HIGHA vulnerability has been identified in Solid Edge SE2025 (All versions < V225.0 Update 15), Solid Edge SE2026 (All versions < V226.0 Update EPSS 0.2%CVE-2025-9020LOWPX4 PX4-Autopilot Mavlink Shell Closing mavlink_receiver.cpp handle_message_serial_control use after freeEPSS 0.2%CVE-2021-30337HIGHPossible use after free when process shell memory is freed using IOCTL call and process initialization is in progress in Snapdragon Auto, SnEPSS 0.2%CVE-2024-56434MEDIUMUAF vulnerability in the device node access module Impact: Successful exploitation of this vulnerability may cause service exceptions of theEPSS 0.2%CVE-2025-38500HIGHxfrm: interface: fix use-after-free after changing collect_md xfrm interfaceEPSS 0.2%CVE-2026-84521MEDIUMA use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27,EPSS 0.2%CVE-2023-47857MEDIUMmultimedia camera has a UAF vulnerabilityEPSS 0.2%CVE-2023-48360MEDIUMmultimedia player has a UAF vulnerabilityEPSS 0.2%CVE-2026-65402MEDIUMA use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27,EPSS 0.2%CVE-2023-49135MEDIUMmultimedia player has a UAF vulnerabilityEPSS 0.2%CVE-2026-43808MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOEPSS 0.2%CVE-2025-0819HIGHMali GPU Kernel Driver allows access to already freed memoryEPSS 0.2%CVE-2026-84593MEDIUMA use after free issue was addressed with improved memory management. This issue is fixed in iOS 27 and iPadOS 27. An app may be able to cauEPSS 0.2%CVE-2026-58091HIGHKernel use-after-free via the SNDCTL_DSP_SYNCSTART ioctlEPSS 0.2%