Fallos del tipo CWE-416

5134 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2026-10923HIGHUse after free in WebAppInstalls in Google Chrome on Android prior to 149.0.7827.53 allowed a local attacker to execute arbitrary code via aEPSS 0.4%CVE-2026-11791MEDIUM389-ds-base: 389-ds-base: use-after-free in schema reload via attr_syntax_swap_ht()EPSS 0.4%CVE-2024-22956HIGHswftools 0.9.2 was discovered to contain a heap-use-after-free vulnerability via the function removeFromTo at swftools/src/swfc.c:838EPSS 0.4%CVE-2026-50312MEDIUMWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-58733HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-58731HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-58734HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-58730HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-58738HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-58736HIGHInbox COM Objects (Global Memory) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-49167MEDIUMWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-95354HIGHUse after free in Verifier in Google Chrome prior to 154.0.8037.57 allowed a remote attacker who had compromised the renderer process to potEPSS 0.3%CVE-2025-49699HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34966HIGHFoxit PDF Editor FileAttachment Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34968HIGHFoxit PDF Editor transitionToState Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34967HIGHFoxit PDF Editor Line Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34960HIGHFoxit PDF Editor Circle Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2025-22004HIGHnet: atm: fix use after free in lec_send()EPSS 0.3%CVE-2021-34957HIGHFoxit PDF Editor Highlight Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%CVE-2021-34959HIGHFoxit PDF Editor Square Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 0.3%