Falhas do tipo CWE-416

5.110 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar (ler ou escrever) um bloco de memória que já foi liberado (free, delete). O programa mantém um ponteiro para a memória, mas o sistema operacional pode reatribuir essa região para outro uso, causando corrupção de dados, travamento ou execução de código arbitrário.

Exemplo

Um servidor web aloca memória para armazenar dados de sessão do usuário, depois libera essa memória quando a sessão encerra. Se uma thread continuar tentando acessar essa sessão após a liberação, pode ler dados de outra sessão ou sobrescrever dados críticos de outro processo.

Como mitigar

Sempre anule ponteiros após liberar memória (ptr = NULL), use variáveis de controle para rastrear estado de alocação, implemente gerenciamento automático de memória quando possível (smart pointers em C++), e execute testes com sanitizers (AddressSanitizer, Valgrind) durante desenvolvimento e CI/CD.

CVE-2026-11118HIGHUse after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%CVE-2023-1989HIGHA use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. In this flaw, a call to btsdio_remove wiEPSS 0.4%CVE-2023-25893HIGHZDI-CAN-19539: Adobe Dimension USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-47205MEDIUMEnvoy: ext_authz Use-After-Free during Stream Teardown with Per-Route OverridesEPSS 0.4%CVE-2025-59221HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-25894HIGHZDI-CAN-19543: Adobe Dimension USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-26336HIGHZDI-CAN-20275: Adobe Dimension USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-25899HIGHZDI-CAN-19522: Adobe Dimension USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-26544HIGHIn the Linux kernel 6.0.8, there is a use-after-free in run_unpack in fs/ntfs3/run.c, related to a difference between NTFS sector size and mEPSS 0.4%CVE-2022-42374HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is reEPSS 0.4%CVE-2024-20789HIGHZDI-CAN-24030: Adobe Dimension SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-91721HIGHUse after free in Internals in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to potentially execute arbitrary code outside EPSS 0.4%CVE-2023-44436HIGHKofax Power PDF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-29841HIGHUniversal Print Management Service Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2023-44435HIGHKofax Power PDF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-86713HIGHPX4 Autopilot through 1.17.0 Use-After-Free in load_monEPSS 0.4%CVE-2026-14111HIGHUse after free in WebProtect in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extensiEPSS 0.4%CVE-2026-13805HIGHUse after free in GFX in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker to execute arbitrary code via a crafted HTML EPSS 0.4%CVE-2026-8551HIGHUse after free in Downloads in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who convinced a user to engage in specific UIEPSS 0.4%CVE-2026-8518HIGHUse after free in Blink in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.4%