Fallos del tipo CWE-416

5043 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2024-26455HIGHfluent-bit 2.2.2 contains a Use-After-Free vulnerability in /fluent-bit/plugins/custom_calyptia/calyptia.c.EPSS 0.7%CVE-2024-24263HIGHLotos WebServer v0.1.1 was discovered to contain a Use-After-Free (UAF) vulnerability via the response_append_status_line function at /lotosEPSS 0.7%CVE-2024-2400HIGHUse after free in Performance Manager in Google Chrome prior to 122.0.6261.128 allowed a remote attacker to potentially exploit heap corruptEPSS 0.7%CVE-2024-24260HIGHmedia-server v1.0.0 was discovered to contain a Use-After-Free (UAF) vulnerability via the sip_subscribe_remove function at /uac/sip-uac-subEPSS 0.7%CVE-2024-24262HIGHmedia-server v1.0.0 was discovered to contain a Use-After-Free (UAF) vulnerability via the sip_uac_stop_timer function at /uac/sip-uac-transEPSS 0.7%CVE-2023-24953HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.7%CVE-2021-30469—A flaw was found in PoDoFo 0.9.7. An use-after-free in PoDoFo::PdfVecObjects::Clear() function can cause a denial of service via a crafted PEPSS 0.7%CVE-2026-5281HIGHUse after free in Dawn in Google Chrome prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer process to executEPSS 0.7%KEVCVE-2022-48686CRITICALnvme-tcp: fix UAF when detecting digest errorsEPSS 0.7%CVE-2023-21773HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2019-8526HIGHA use after free issue was addressed with improved memory management. This issue is fixed in macOS Mojave 10.14.4. An application may be ablEPSS 0.7%KEVCVE-2026-50369HIGHWindows Remote Desktop Services Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2026-82623MEDIUMopen62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after freeEPSS 0.7%CVE-2023-24947HIGHWindows Bluetooth Driver Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-24082HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-20681HIGHWindows Subsystem for Linux Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2022-46394HIGHAn issue was discovered in the Arm Mali GPU Kernel Driver. A non-privileged user can make improper GPU processing operations to gain access EPSS 0.7%CVE-2026-56649MEDIUMWindows Network File System Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-35351MEDIUMWindows Active Directory Certificate Services (AD CS) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-38078HIGHXbox Wireless Adapter Remote Code Execution VulnerabilityEPSS 0.7%