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-2025-21703HIGHnetem: Update sch->q.qlen before qdisc_tree_reduce_backlog()EPSS 0.3%CVE-2023-52922HIGHcan: bcm: Fix UAF in bcm_proc_show()EPSS 0.3%CVE-2022-44519MEDIUMAcrobat Reader | Use After Free (CWE-416)EPSS 0.3%CVE-2026-103679MEDIUMTnef: use-after-free and double-free in get_body_files() via multi-value body extractionEPSS 0.3%CVE-2025-13014HIGHUse-after-free in the Audio/Video componentEPSS 0.3%CVE-2024-47814LOWuse-after-free when closing buffers in VimEPSS 0.3%CVE-2026-17750HIGHUse after free in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2022-49465HIGHblk-throttle: Set BIO_THROTTLED when bio has been throttledEPSS 0.3%CVE-2026-8550MEDIUMUse after free in Google Lens in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process toEPSS 0.3%CVE-2025-27181HIGHSubstance3D - Modeler | Use After Free (CWE-416)EPSS 0.3%CVE-2025-49725HIGHWindows Notification Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2021-47634HIGHubi: Fix race condition between ctrl_cdev_ioctl and ubi_cdev_ioctlEPSS 0.3%CVE-2026-11937LOWSecurity vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify AccessEPSS 0.3%CVE-2024-53057HIGHnet/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOTEPSS 0.3%CVE-2025-49733HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-52974HIGHscsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddressEPSS 0.3%CVE-2026-16362HIGHUse-after-free in the WebRTC: Audio/Video componentEPSS 0.3%CVE-2025-55678HIGHDirectX Graphics Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2023-22360HIGHUse-after free vulnerability exists in Screen Creator Advance 2 Ver.0.1.1.4 Build01 and earlier due to lack of error handling process even wEPSS 0.3%CVE-2022-49700HIGHmm/slub: add missing TID updates on slab deactivationEPSS 0.3%