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-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%