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-2024-21339MEDIUMWindows USB Generic Parent Driver Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-4148HIGHExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operatorsEPSS 0.5%CVE-2024-30303HIGHZDI-CAN-23044: Adobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-40283HIGHAn issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free becEPSS 0.5%CVE-2023-42097HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-42096HIGHFoxit PDF Reader PDF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-42091HIGHFoxit PDF Reader XFA Doc Object Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-42092HIGHFoxit PDF Reader Doc Object Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-42094HIGHFoxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2021-4128MEDIUMWhen transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentEPSS 0.5%CVE-2025-43576HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.5%CVE-2023-51612LOWKofax Power PDF JP2 File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.5%CVE-2022-40637HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Ansys SpaceClaim 2022 R1. User interactionEPSS 0.5%CVE-2025-1048HIGHSonos Era 300 Speaker libsmb2 Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-48706LOWVim has heap-use-after-free at /src/charset.c:1770:12 in skipwhiteEPSS 0.5%CVE-2025-48543HIGHIn multiple locations, there is a possible way to escape chrome sandbox to attack android system_server due to a use after free. This could EPSS 0.5%KEVCVE-2023-4733HIGHUse After Free in vim/vimEPSS 0.5%CVE-2022-1652—Linux Kernel could allow a local attacker to execute arbitrary code on the system, caused by a concurrency use-after-free flaw in the bad_flEPSS 0.5%CVE-2026-42900HIGHMicrosoft Windows App Store Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2024-49023MEDIUMMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 0.5%