Falhas do tipo CWE-416

5.043 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-2026-5278HIGHUse after free in Web MIDI in Google Chrome on Android prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a craEPSS 0.5%CVE-2026-7980HIGHUse after free in WebAudio in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via EPSS 0.5%CVE-2026-7928HIGHUse after free in WebRTC in Google Chrome on Windows prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sanEPSS 0.5%CVE-2026-7987HIGHUse after free in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2026-5280HIGHUse after free in WebCodecs in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code inside a sandbox viEPSS 0.5%CVE-2026-5285HIGHUse after free in WebGL in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code inside a sandbox via a EPSS 0.5%CVE-2024-49530HIGHAcrobat Reader | Use After Free (CWE-416)EPSS 0.5%CVE-2026-12245HIGHDenial of DNS over TLS service by any DoT clientEPSS 0.5%CVE-2023-42080HIGHPDF-XChange Editor EMF File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-41218HIGHBIG-IP PEM iRules vulnerabilityEPSS 0.5%CVE-2026-57435LOWNokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`EPSS 0.5%CVE-2023-42075HIGHPDF-XChange Editor JPG File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-42082HIGHPDF-XChange Editor JPG File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.5%CVE-2024-9120HIGHUse after free in Dawn in Google Chrome on Windows prior to 129.0.6668.70 allowed a remote attacker to potentially exploit heap corruption vEPSS 0.5%CVE-2025-13952CRITICALGPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBPEPSS 0.5%CVE-2024-53186CRITICALksmbd: fix use-after-free in SMB request handlingEPSS 0.5%CVE-2024-25763MEDIUMopenNDS 10.2.0 is vulnerable to Use-After-Free via /openNDS/src/auth.c.EPSS 0.5%CVE-2023-1227HIGHUse after free in Core in Google Chrome on Lacros prior to 111.0.5563.64 allowed a remote attacker who convinced a user to engage in specifiEPSS 0.5%CVE-2026-11003HIGHUse 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 0.5%CVE-2026-10939HIGHUse 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 0.5%