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-2023-22402MEDIUMJunos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor flapsEPSS 0.5%CVE-2024-45063CRITICALMultiple issues in ctl(4) CAM Target LayerEPSS 0.5%CVE-2024-21439HIGHWindows Telephony Server Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2025-62555HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.5%CVE-2022-3297HIGHUse After Free in vim/vimEPSS 0.5%CVE-2025-7657HIGHUse after free in WebRTC in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.5%CVE-2026-22857MEDIUMFreeRDP has a heap-use-after-free in irp_thread_funcEPSS 0.5%CVE-2023-1213HIGHUse after free in Swiftshader in Google Chrome prior to 111.0.5563.64 allowed a remote attacker to potentially exploit heap corruption via aEPSS 0.5%CVE-2026-6759HIGHUse-after-free in the Widget: Cocoa componentEPSS 0.5%CVE-2026-61920MEDIUMWindows DNS Server Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-2458HIGHUse after free in ChromeOS Camera in Google Chrome on ChromeOS prior to 113.0.5672.114 allowed a remote attacker who convinced a user to engEPSS 0.5%CVE-2023-42093LOWFoxit PDF Reader Annotation Use-After-Free Information Disclosure VulnerabilityEPSS 0.5%CVE-2025-53761HIGHMicrosoft PowerPoint Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-16353CRITICALInvalid pointer in the DOM: Bindings (WebIDL) componentEPSS 0.5%CVE-2025-53738HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.5%CVE-2024-7528CRITICALIncorrect garbage collection interaction in IndexedDB could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox EPSS 0.5%CVE-2026-33416HIGHLIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`EPSS 0.5%CVE-2025-59227HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-25983MEDIUMImageMagick has Use After Free in MSLStartElement in "coders/msl.c"EPSS 0.5%CVE-2026-45751MEDIUMSuricata detect/transform: use-after-free in dotprefix transformEPSS 0.5%