Falhas do tipo CWE-416

5.109 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-2026-10914HIGHUse after free in ANGLE in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandEPSS 0.4%CVE-2026-10902HIGHUse after free in Ozone in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via a crafted HTML page.EPSS 0.4%CVE-2026-10895HIGHUse after free in Ozone in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via a crafted HTML page.EPSS 0.4%CVE-2020-5376MEDIUMDell Inspiron 7347 BIOS versions prior to A13 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to sysEPSS 0.4%CVE-2026-10956HIGHUse after free in MimeHandlerView in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbEPSS 0.4%CVE-2026-10913HIGHUse after free in ANGLE in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandEPSS 0.4%CVE-2026-10954HIGHUse after free in Actor in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a cEPSS 0.4%CVE-2026-22166HIGHGPU DDK - Write UAF in KEGLGetPoolBuffers, WebGL reachableEPSS 0.4%CVE-2025-22403CRITICALIn sdp_snd_service_search_req of sdp_discovery.cc, there is a possible way to execute arbitrary code due to a use after free. This could leaEPSS 0.4%CVE-2023-47055HIGHZDI-CAN-21765: Adobe Premiere Pro M4A File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-43704MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, maEPSS 0.4%CVE-2026-43663MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and EPSS 0.4%CVE-2026-42007CRITICALAn attacker that has valid credentials can use a Sieve script with the editheader extension to trigger a use-after-free in the mail editing EPSS 0.4%CVE-2025-22408CRITICALIn rfc_check_send_cmd of rfc_utils.cc, there is a possible way to execute arbitrary code due to a use after free. This could lead to remote EPSS 0.4%CVE-2026-39872MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and EPSS 0.4%CVE-2025-53137HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2025-0445MEDIUMUse after free in V8 in Google Chrome prior to 133.0.6943.53 allowed a remote attacker to potentially exploit heap corruption via a crafted EPSS 0.4%CVE-2022-3591HIGHUse After Free in vim/vimEPSS 0.4%CVE-2026-28879MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadEPSS 0.4%CVE-2023-26336HIGHZDI-CAN-20275: Adobe Dimension USD File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%