Falhas do tipo CWE-416

5.129 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-2023-28830HIGHA vulnerability has been identified in JT2Go (All versions < V14.2.0.5), Solid Edge SE2022 (All versions < V222.0 Update 13), Solid Edge SE2EPSS 0.3%CVE-2026-4449HIGHUse after free in Blink in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 0.3%CVE-2026-4446HIGHUse after free in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.3%CVE-2023-3297HIGHIn Ubuntu's accountsservice an unprivileged local attacker can trigger a use-after-free vulnerability in accountsservice by sending a D-Bus EPSS 0.3%CVE-2022-45343HIGHGPAC v2.1-DEV-rev478-g696e6f868-master was discovered to contain a heap use-after-free via the Q_IsTypeOn function at /gpac/src/bifs/unquantEPSS 0.3%CVE-2026-12439HIGHUse after free in Digital Credentials in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to potentially exploit heap corruptEPSS 0.3%CVE-2019-16471HIGHUse-After-Free in app.measureDialog - Tianfu CupEPSS 0.3%CVE-2026-4456HIGHUse after free in Digital Credentials API in Google Chrome prior to 146.0.7680.153 allowed a remote attacker who had compromised the rendereEPSS 0.3%CVE-2026-4445HIGHUse after free in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.3%CVE-2022-49168HIGHbtrfs: do not clean up repair bio if submit failsEPSS 0.3%CVE-2025-55224HIGHWindows Hyper-V Remote Code Execution VulnerabilityEPSS 0.3%CVE-2022-1998—A use after free in the Linux kernel File System notify functionality was found in the way user triggers copy_info_records_to_user() call toEPSS 0.3%CVE-2025-55228HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.3%CVE-2025-2136HIGHUse after free in Inspector in Google Chrome prior to 134.0.6998.88 allowed a remote attacker to potentially exploit heap corruption via a cEPSS 0.3%CVE-2024-56651HIGHcan: hi311x: hi3110_can_ist(): fix potential use-after-freeEPSS 0.3%CVE-2025-60717HIGHWindows Broadcast DVR User Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2024-41168HIGHUse after free in some Intel(R) PROSet/Wireless WiFi and Killerâ„¢ WiFi software for Windows before version 23.80 may allow an unauthenticatEPSS 0.3%CVE-2023-24914HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2022-41285HIGHA vulnerability has been identified in JT2Go (All versions < V14.1.0.6), Teamcenter Visualization V13.2 (All versions < V13.2.0.12), TeamcenEPSS 0.3%CVE-2025-59515HIGHWindows Broadcast DVR User Service Elevation of Privilege VulnerabilityEPSS 0.3%