Weaknesses of type CWE-416

5,138 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-2025-6640HIGHPDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-10905HIGHUse after free in Network in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to poteEPSS 0.3%CVE-2026-10953HIGHUse after free in Core in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer processEPSS 0.3%CVE-2026-10909HIGHUse after free in Dawn in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentiEPSS 0.3%CVE-2025-6645HIGHPDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-10918HIGHUse after free in Viz in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentiaEPSS 0.3%CVE-2025-6661HIGHPDF-XChange Editor App Object Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-10894HIGHUse after free in Printing in Google Chrome on Linux prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2026-10899HIGHUse after free in Ozone in Google Chrome on Linux prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specifiEPSS 0.3%CVE-2026-11012HIGHUse after free in Serial in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2025-6644HIGHPDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-34770HIGHElectron: Use-after-free in PowerMonitor on Windows and macOSEPSS 0.3%CVE-2026-78376HIGHWebkitgtk: use-after-free of jscvalue function parametersEPSS 0.3%CVE-2024-1085HIGHUse-after-free in Linux kernel's netfilter: nf_tables componentEPSS 0.3%CVE-2023-4623HIGHUse-after-free in Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) componentEPSS 0.3%CVE-2023-4015HIGHUse-after-free in Linux kernel's netfilter: nf_tables componentEPSS 0.3%CVE-2022-49489HIGHdrm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm runtime resumeEPSS 0.3%CVE-2024-50267HIGHUSB: serial: io_edgeport: fix use after free in debug printkEPSS 0.3%CVE-2022-49288HIGHALSA: pcm: Fix races among concurrent prealloc proc writesEPSS 0.3%CVE-2026-22851MEDIUMFreeRDP RDPGFX ResetGraphics race leads to use-after-free in SDL client (sdl->primary)EPSS 0.3%