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-2026-57236LOWNokogiri: Possible Use-After-Free when `Nokogiri::XML::Document#encoding=` raises an exceptionEPSS 0.4%CVE-2026-79064CRITICALUse after free in Network in Google Chrome on on Mac prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execuEPSS 0.4%CVE-2016-9401MEDIUMpopd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.EPSS 0.4%CVE-2024-38137HIGHWindows Resource Manager PSM Service Extension Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2023-0799MEDIUMLibTIFF 4.4.0 has an out-of-bounds read in tiffcrop in tools/tiffcrop.c:3701, allowing attackers to cause a denial-of-service via a crafted EPSS 0.4%CVE-2025-62557HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-11756HIGHUse after free in Safe Browsing in Google Chrome prior to 141.0.7390.107 allowed a remote attacker who had compromised the renderer process EPSS 0.4%CVE-2024-49526HIGHAnimate | Use After Free (CWE-416)EPSS 0.4%CVE-2022-0487—A use-after-free vulnerability was found in rtsx_usb_ms_drv_remove in drivers/memstick/host/rtsx_usb_ms.c in memstick in the Linux kernel. IEPSS 0.4%CVE-2023-38078LOWKofax Power PDF U3D File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.4%CVE-2025-58728HIGHWindows Bluetooth Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-50175HIGHWindows Digital Media Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-7425HIGHLibxslt: libxml2: heap use-after-free in libxslt caused by atype corruption in xmlattrptrEPSS 0.4%CVE-2025-1706HIGHGPU DDK - Improper locking when accessing the pvr_exp_fence objectEPSS 0.4%CVE-2023-51557HIGHFoxit PDF Reader AcroForm Doc Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-51552HIGHFoxit PDF Reader AcroForm Signature Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-51556HIGHFoxit PDF Reader AcroForm Doc Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2020-16119MEDIUMDCCP CCID structure use-after-freeEPSS 0.4%CVE-2023-51551HIGHFoxit PDF Reader AcroForm Signature Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-1454LOWOpensc: memory use after free in authentic driver when updating token infoEPSS 0.4%